HP XP External Storage Software User Manual

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HP StorageWorks XP24000 External Storage Software User’s

Guide

Part number: T5206–96001

irst edition: June 2007

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Revision History

Edition

First

Date

June 2007

Description

This edition applies to microcode version 60-01-31-00/00 or later.

Contents

AboutthisGuide .......................... 11

IntendedAudience...................................... 11

RelatedDocumentation.................................... 11

DocumentConventions.................................... 11

ConventionsforStorageCapacityValues ............................ 11

WindowIllustrations.................................... 12

HPTechnicalSupport.................................... 12

SubscriptionService .................................... 12

HPWebsites ....................................... 12

Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1OverviewofHPStorageWorksXPExternalStorageSoftware. . . . . . . 13

UnifyingCopyOperationsbetweenDifferentStorageSystems .................. 13

UnifyingConnectionsfromaHosttoDifferentStorageSystems .................. 14

2AboutExternalStorageOperations ................. 17

ConnectingExternalStorageSystem ............................. 17

ExternalStorageComponents................................ 18

StorageSystemsandCross-subsystemPaths ........................ 19

VolumesandMappingPaths .............................. 19

ExternalStorageOperations................................. 20

ConﬁguringExternalStorage ................................ 20

ChoosingtheExternalPort ............................... 21

ChoosingandMappingExternalVolumes......................... 21

RegisteringaVolumetoanExternalVolumeGroup(ExG) .................. 21

ConﬁguringExternalVolumeAttributes .......................... 22

Cross-subsystemPaths ................................. 23

PathMode .................................... 23

ExamplesofAlternatePaths............................. 23

ExamplesofSwitchingI/OExecutionPathstoAlternatePaths............... 25

ConnectingMainframeVolumes............................. 29

ConnectingOpenSystemsVolumes............................ 30

ChoosingMappingPolicy.................................. 30

DifferencebetweenAutomaticMappingandManualMapping................ 30

PortDiscoveryandVolumeDiscovery........................... 30

UsingaMappedExternalVolumefromaConnectedHost.................... 31

StoringNewDataintheMappedExternalVolume ..................... 31

UsingExistingDataintheMappedExternalVolume .................... 32

InteroperabilitywithotherProductsandFunctions........................ 33

HPStorageWorksXPLUNManager ........................... 33

HPStorageWorksXPLUNExpansion(LUSE)........................ 33

HPStorageWorksXPVirtualLVI/LUN(VLL)......................... 34

CacheResidencyManager ............................... 34

HP StorageWorks XP Performance Monitor and HP StorageWorks XP Auto LUN Software . . . . . 34

HPStorageWorksXPContinuousAccessSoftware ..................... 34

TrueCopyforMainframe ................................ 34

HPStorageWorksXPContinuousAccessJournalSoftware .................. 34

UniversalReplicatorforMainframe............................ 35

HPStorageWorksXPBusinessCopySoftware ....................... 35

ShadowImageforMainframe .............................. 35

XP24000 External Storage Software User’s Guide

HPStorageWorksXPSnapshot.............................. 35

SNMPAgent ..................................... 35

ExamplesofUsingExternalVolumeswithOtherProducts .................... 35

AutoLUNOperations ................................. 35

ContinuousAccessOperations.............................. 36

ContinuousAccessJournalOperations .......................... 37

BusinessCopyOperations ............................... 39

XPSnapshotOperations ................................ 40

3PreparingforExternalStorageOperations ............. 43

SystemRequirements.................................... 43

StorageSystemsSupportedasExternalStorageSystems................... 43

ExternalStorageRequirements.............................. 43

GuidelinesforExternalStorageOperations .......................... 44

MappingGuidelines.................................. 44

RecommendedApplicationsaccordingtotheHDDType................... 44

CapacityGuidelines.................................. 45

GuidelinesforMainframeVolumes............................ 47

VolumeAttributeGuidelines............................... 47

CreatingLUSEVolumeGuidelines ............................ 47

MaintenanceGuidelinesforanExternalStorageSystem................... 47

PerformanceandStatusGuidelines............................ 48

RAIDLevelConsiderations ............................... 48

InstallingandUninstallingExternalStorage .......................... 48

InstallingExternalStorage................................ 49

UninstallingExternalStorage .............................. 49

StartingExternalStorage .................................. 49

4UsingtheExternalStorageGUI ................... 51

VolumeOperationWindow................................. 51

VolumeOperationTree................................. 52

VolumeOperationList(WhenSubsystemorProductNameisClicked)............. 53

VolumeOperationList(WhenPathGroupisClicked) .................... 54

PreviewDialogBox .................................. 57

PathOperationWindow .................................. 58

PathOperationTree .................................. 60

PathOperationList(WhenSubsystemisClicked)...................... 61

PathOperationList(WhenProductNameisClicked) .................... 62

PathOperationList(WhenPortorWWNisClicked) .................... 63

PortOperationWindow .................................. 63

PortOperationTree .................................. 65

PortOperationList................................... 65

5PerformingExternalStorageOperations .............. 67

OverviewofSettingOperations ............................... 67

SettingPortofExternalStorageSystem ............................ 68

SettingPortAttributeforLocalStorageSystem ......................... 68

MappinganExternalVolumeAutomatically.......................... 69

MappinganExternalVolumeManually............................ 69

AddVolumeDialogBox ................................ 71

SetExternalVolumeParameterDialogBox......................... 72

LDEVMapping(Auto)DialogBox ............................ 74

LDEVMapping(Manual)DialogBox........................... 75

SSIDDialogBox.................................... 76

Example:HowtoMapLDEVsAutomatically........................ 77

Example:HowtoMapLDEVsManually.......................... 77

SettingtheCross-subsystemPaths............................... 78

ConﬁgureCross-subsystemPathsDialogBox........................ 78

ConﬁguringCross-subsystemPath ............................ 81

Changing the ConﬁguredCross-subsystemPathPriority ................... 82

Canceling the Cross-subsystem Path Conﬁguration ..................... 83

ChangingtheCross-subsystemPath............................ 83

CheckingtheExternalVolumeDetails............................. 83

LDEVInformationDialogBox .............................. 84

MappingPathInformationDialogBox .......................... 84

TurningOnorOfftheStorageSystem............................. 87

CommandsforTurningOnorOffOnlytheExternalStorageSystem.............. 87

TurningOnorOffOnlytheExternalStorageSystem .................... 88

TurningOnorOffOnlytheLocalStorageSystem...................... 88

TurningOnorOffBothStorageSystems.......................... 89

DisconnectingExternalStorageSystemorDisconnectingExternalVolume ............. 89

DisconnectingAllExternalVolumes(DisconnectSubsystem) ................. 90

DisconnectinganIndividualExternalVolume(DisconnectVolume)............... 90

CheckingConnectionStatusandResumingExternalVolumeOperation .............. 91

ResumingAllExternalVolumes(CheckPaths&RestoreVolume)................ 91

ResuminganIndividualExternalVolume(CheckPaths&RestoreVolume)............ 92

StoppingtheUseofPathstotheExternalVolume(DisconnectPaths)................ 92

RestoringthePathstotheExternalVolume(CheckPaths)..................... 93

ChangingtheCacheModeSettingoftheExternalVolume.................... 93

Changing the InﬂowControlSettingoftheExternalVolume ................... 94

ChangingthePortSettingoftheExternalStorageSystem .................... 94

ChangeWWNParameterDialogBox .......................... 95

EditingMappingPolicy................................... 95

EditPolicyDialogBox ................................. 95

DeletingtheExternalVolumeMapping ............................ 96

6RemoteCommandDevices.................... 99

OverviewofRemoteCommandDevices............................ 99

GuidelinesforRemoteCommandDevices........................... 100

MappingaCommandDeviceasaRemoteCommandDevice .................. 102

Using Continuous Access or Continuous Access Journal with Remote Command Device . . . . . . . . 102

ProceduretoUseInitiator/ExternalMIXMode ....................... 104

RestrictionsonInitiator/ExternalMIXMode ........................ 105

7Troubleshooting......................... 107

TroubleshootingforExternalStorage ............................. 107

CallingHPTechnicalSupport ................................ 111

AConnectingExternalStorageSystems................ 113

TagmaStoreAMSStorageSystem,TagmaStoreWMSStorageSystem............... 113

System Parameters for Connecting TagmaStore AMS Storage System, TagmaStore WMS Storage

System........................................ 113

Relationship between Serial Number in Device List of Volume Operation Window and TagmaStore

AMSStorageSystem,TagmaStoreWMSStorageSystemModel ............... 114

Relationship between WWN of Port of TagmaStore AMS Storage System or TagmaStore WMS

StorageSystemandController.............................. 115

Path Status and Examples of Recovery Procedure (For TagmaStore AMS Storage System, TagmaStore

WMSStorageSystem) ................................. 115

Thunder9500VStorageSystem ............................... 116

SystemParametersforConnectingThunder9500VStorageSystem .............. 116

RelationshipbetweenSerialNumberandThunder9500VModel............... 118

Relationship between WWN of Port of Thunder 9500V Storage System and Controller . . . . . . 118

Path Status and Examples of Recovery Procedure (For Thunder 9500V Storage System) . . . . . . 119

USPVStorageSystem ................................... 119

PathStatusandExamplesofRecoveryProcedure(ForUSPVStorageSystem).......... 119

TagmaStoreUSPStorageSystem,TagmaStoreNSCStorageSystem................ 120

XP24000 External Storage Software User’s Guide

Path Status and Examples of Recovery Procedure (For TagmaStore USP Storage System, TagmaStore

NSCStorageSystem).................................. 120

Lightning9900VStorageSystem............................... 121

Path Status and Examples of Recovery Procedure (For Lightning 9900V Storage System) . . . . . 121

Lightning9900StorageSystem ............................... 122

Path Status and Examples of Recovery Procedure (For Lightning 9900 Storage System) . . . . . . 122

SVS200StorageSystem .................................. 123

PathStatusandExamplesofRecoveryProcedure(ForSVS200StorageSystem)......... 123

EVAStorageSystem .................................... 124

SystemParameterSettingsforConnectingEVAStorageSystem................ 124

IdentifyingLogicalVolumeofEVAStorageSystem(UsingCharacteristic2)........... 124

NoteonBehaviorofAlternatePathwhenEVAStorageSystemisConnected .......... 125

SystemParameterSettingsforConnectingSunStorEdge6120/6320 ............... 125

SystemParameterSettingsforConnectingStorageTekFlexLine380 ................ 126

SystemParameterSettingsforConnectingCLARiiONCX600................... 126

Non-HPStorageSystems .................................. 126

BRequiredVolumeCapacityforEachEmulationType.......... 127

HowtoFigureOutRequiredExternalVolumeCapacity ..................... 127

CapacityListforEachEmulationType............................. 129

CAdjustingVolumeCapacitiesforPairs ............... 133

DAcronymsandAbbreviations ................... 135

Index .............................. 137

Figures

Type(ExampleoftheOPEN-3emulationtype).................... 46

EmulationType................................. 47

UnifyingCopyOperationsbetweenDifferentStorageSystems ............ 14

UnifyingConnectionsfromaHosttoDifferentStorageSystems ............ 15

ConceptofExternalStorage........................... 18

ExternalStorageComponents .......................... 19

ExampleofAlternatePathSetting ........................ 24

ExampleofAvailableAlternatePathSetting .................... 24

Example of U

WhenthePathModeisMultiMode ....................... 26

WhenthePathModeisSingleMode....................... 27

SingleModewithAlternatePathsinNormalandStandby .............. 28

Single Mod

Storing the New Data in the Mapped External Volume . . . . . . . . . . . . . . . 32

UsingtheExistingDataintheMappedExternalVolume............... 33

ExampleoftheAutoLUNOperation ....................... 36

ExampleoftheContinuousAccessOperation ................... 37

ExampleoftheContinuousAccessJournalOperation................ 39

ExampleoftheBusinessCopyOperation ..................... 40

ExampleoftheXPSnapshotOperation ...................... 41

Exampl When the External Volume Capacity is Bigger than the Basic Capacity of Speciﬁed Emulation

When the External Volume Capacity is Smaller than the Basic Capacity of Speciﬁed

VolumeOperationWindow........................... 51

VolumeOperationListwhenSubsystemoraProductNameisClicked ......... 54

VolumeOperationListwhenPathGroupisClicked ................. 55

PreviewDialogBox .............................. 58

PathOperationWindow ............................ 59

PathOperationListwhenSubsystemisClicked................... 61

PathOperationListwhenProductNameisClicked ................. 62

PathOperationListwhenPortorWWNisClicked ................. 63

PortOperationWindow ............................ 64

perationsofMakingExternalVolumesUsablefromaHost ............. 67

AddVolumeDialogBox ............................ 71

SetExternalVolumeParameterDialogBox..................... 73

LDEVMapping(Auto)DialogBox ........................ 74

LDEVMapping(Manual)DialogBox....................... 75

navailableAlternatePathSetting ................... 25

ewithAlternatePathsinStandbyonly.................. 29

eofExternalVolumeof2TBorLess .................... 46

XP24000 External Storage Software User’s Guide

SSIDDialogBox................................ 76

SetSSIDDialogBox .............................. 77

ExampleofLDEVMapping(Manual)DialogBox.................. 78

ConﬁgureCross-subsystemPathsDialogBox.................... 79

PortDiscoveryDialogBox............................ 80

Pop-up Menu of ConﬁgureCross-subsystemPathsDialogBox............. 82

LDEV Inform

MappingPathInformationDialogBox ...................... 85

ChangeWWNParameterDialogBox ...................... 95

EditPolicyDialogBox ............................. 96

Outline of

Difference between Standard Mode and Initiator/External MIX Mode . . . . . . . . . 103

Example of Using Continuous Access or Continuous Access Journal with Remote Command

ationDialogBox .......................... 84

RemoteCommandDevice ....................... 100

Device..................................... 104

Conﬁguration Example for which Logical Volumes Cannot be Identiﬁed only by Characteristic

1....................................... 125

IdeaofLDEVCapacity............................. 128

Example of How to Figure Out the Volume Capacity (In the Case of OPEN-3) . . . . . . 129

Copying Data from External Storage System (Using an External Volume as P-VOL) . . . . 133

Copying Data to External Storage System (Setting an External Volume as S-VOL) . . . . 134

Tables

1 2

3 4 5 6 7 8 9

11 12 13 14 15 16 17 18 19

25 26

27 28 29 30

32 33

DocumentConventions .............................. 11

ExternalStorageRequirements .......................... 44

When the Emulation Type of the External Volume is for OPEN ... ... ... ... 45

When the Emulation Type of the External Volume is for Mainframe . . . . . . . . . . 45

TheItems Clickedinthe Volume OperationTreeand theContentsDisplayed . . . . . . 52

Pop-up Menu that can be Displayed in the Volume Operation Tree . ... ... ... 53

Status of the External Volume displayed in the Ext. VOL Status ... ... ... ... 54

Pop-up Menu in the External Volumes (Volume Operation Window) . ... ... ... 57

Pop-up Menu in the Cross-subsystem Paths (Volume Operation Window) . . . . . . . . 57

The Items Clicked in the Path Operation Tree and the Contents Displayed . . . . . . . . 60

Status of the Cross-subsystem Path displayed in the Status .. ... ... ... ... 62

Pop-up Menu in the Path Operation List (when Subsystem is clicked) . ... ... ... 62

Pop-up Menu in the Path Operation List (when Product Name is clicked) . . . . . . . . 63

Pop-upMenuinthePortInformation ....................... 66

pMenuintheAddVolumedialogbox .. ... ... ... ... ... ... 72

Pop-u

Pop-up Menu in the Conﬁgure Cross-subsystem Paths dialog box . . ... ... ... 80

Status of the Mapping Paths in the Mapping Path Information Dialog Box . . . . . . . 86

Displayed Information in Device Column for Remote Command Device ... ... ... 101

ictionsonRemoteCommandDevice ..................... 102

Restr

GeneralTroubleshootingforExternalStorage . ... ... ... ... ... ... 107

System Parameter Settings (TagmaStore AMS Storage System and TagmaStore WMS Storage

System) .................................... 114

Relationship between Serial Number and Storage System Model of TagmaStore AMS Storage

System,TagmaStoreWMSStorageSystem ... ... ... ... ... ... ... 115

ationship between WWN of Port and Controller (TagmaStore AMS Storage System,

Rel

TagmaStoreWMSStorageSystem) ........................ 115

Path Status and Examples of Recovery Procedure (For TagmaStore AMS Storage System,

TagmaStoreWMSStorageSystem) ........................ 116

System Parameter Settings (Thunder 9500V Storage System) . ... ... ... ... 117

Relationship between Serial Number and Storage System Model of Thunder 9500V Storage

System .................................... 118

lationship between WWN of Port and Controller (Thunder 9500V Storage System) . . 118

Path Status and Examples of Recovery Procedure (For Thunder 9500V Storage System) . . 119

Path Status and Examples of Recovery Procedure (For USP V Storage System) . . . . . . 120

Path Status and Examples of Recovery Procedure (For TagmaStore USP Storage System,

TagmaStoreNSCStorageSystem) ......................... 121

Path Status and Examples of Recovery Procedure (For Lightning 9900V Storage System) . 122

Path Status and Examples of Recovery Procedure (For Lightning 9900 Storage System) . . 123

Path Status and Examples of Recovery Procedure (For SVS200 Storage System) . . . . . 124

XP24000 External Storage Software User’s Guide

SystemParameterSettingsforConnectingEVAStorageSystem ............ 124

SystemParameterSettingsforConnectingSunStorEdge6120/6320.......... 126

SystemParameterSettingsforConnectingStorageTekFlexLine380 .......... 126

SystemParameterSettingsforConnectingCLARiiONCX600............. 126

Maximum Usable Capacity of External Volume . . . . . . . . . . . . . . . . . . . 127

LDEVCapacityInformationforEachEmulationType................. 130

VolumeCapacityInformationonEachEmulationType................ 131

AcronymsandAbbreviations .......................... 135

About this Guide

This user’s guide describes and provides instructions for performing External Storage operations on the HP storage system.

The term storage system in this guide refers to an HP StorageWorks XP24000 Disk Array.

Intended Audience

This user’s gu

• the user has a background in data processing and understands RAID storage systems and their

basic functions,

• the user is familiar with the storage system and the Remote Web Console computer,

• the user has r

Guide,and

• the user is familiar with the operating system and web browser software on the system hosting the

Remote Web Console remote console software. For details StorageWorks XP24000 Remote Web Console User’s Guide.

Conventions for Storage Capacity Values

HP XP storage systems use the following values to calculate physical storage capacity values (hard disk drives):

• 1 KB (kilobyte) = 1,000 bytes

bytes

• 1MB (megabyte) =1,000

• 1 GB (gigabyte) = 1,000

• 1 TB (terabyte) = 1,000

XP24000 External Storage Software User’s Guide

HP XP storage systems use the following values to calculate logical storage capacity values (logical devices):

• 1KB(kilobyte)=1,024bytes

bytes

• 1MB(megabyte)= 1,024

• 1GB (gigabyte) = 1,024

• 1 TB (terabyte) = 1,024

• 1 block = 512 bytes

Window Illus

The windows shown in this guide were displayed on a Windows computer with the Internet Explorer browser. The windows may appear different on your computer depending on the operating system and browser being used. Window contents also vary depending on installed program products and the storage s

trations

ystem being managed.

HP Technical Support

For worldwide technical support information, see the HP support website:

ttp://www.hp.com/support

Before contacting HP, collect the following information:

• Product model names and numbers

• Technical support registration number (if applicable)

• Product serial numbers

• Error messages

• Operating system type and revision level

• Detailed questions

Subscription Service

HP recommends that you register your product at the Subscriber’s Choice for Business website:

ttp://www.hp.com/go/e-updates

After registering, you will receive e-mail notiﬁcation of product enhancements, new driver versions, ﬁrmware updates, and other product resources.

HP Websites

For additional information, see the following HP websites:

ttp://www.hp.com

• h

• http://www.hp.com/go/storage

• http://www.hp.com/service_locator

• http://www.hp.com/support/manuals

Documentation Feedback

HP welc To make comments and suggestions about product documentation, send a message to

storagedocsFeedback@hp.com. All submissions become the property of HP.

omes your feedback.

About this Guide

1 Overview of HP StorageWorks XP External Storage Software

External Storage is a program product that enables you to operate multiple storage systems, including the HP StorageWorks XP24000 Disk Array, as if they are all in one storage system. This allows system administrators to easily manage different types of multiple storage systems.

For example, External Storage enables you:

• To unify copy operations between different storage systems.

• To unify connections from a host to different storage systems.

The following subsections explain how the copy operations and the host connection will change after Universal Volume Manager is installed.

Unifying Copy Operations between Different Storage Systems

When you copy data between different storage systems, the copy operations are usually different depending

on the storage system which you use.

If you inst you copy data between volumes in the storage system.

• To copy databetween avolumeinthe storagesystemandavolumeinanexternalstorage system.

• To copy dat

all External Storage, you can perform the following copy operations in the same way as when

a between a volume in an external storage system and a volume in another external

storage system.

XP24000 External Storage Software User’s Guide

Figure 1 Unifying Copy Operations between Different Storage Systems

Unifying Connections from a Host to Different Storage Systems

When a system has multiple storage systems, a host usually needs to connect all storage systems. When a system administrator conﬁgures the connections from a host to volumes, they need to follow the different instructions depending on the storage systems.

If you install External Storage, a system administrator only needs to conﬁgure the connection from a host to the storage system. After the conﬁguration is completed, a host can manipulate volumes in the external storage system in the same way as volumes in the storage system.

Overview of HP StorageWorks XP External Storage Software

Figure 2

Unifying Connections from a Host to Different Storage Systems

XP24000 External Storage Software User’s Guide

Overview of HP StorageWorks XP External Storage Software

2 About External Storage Operations

This chapter explains the functions and the applications of External Storage. This user’s guide uses the following terms:

• An original storage system is called the local storage system.

• A connected storage system is called the external storage system (other user’s guides call this

the external device).

• The volume managed in the local storage system is called the internal volume.

• The volume in the external storage system is called the external volume.

Connecting

External St systems, and other vendors’ storage systems (such as IBM or EMC) as connectable external storage systems. Hosts will recognize these volumes as internal volumes of the storage system.

External volume mapping is required for manipulating external volumes from storage system. Mapping means assigning the management numbers to the external volumes. This management numbers are required for the manipulating external volumes from storage system. By assigning the managemen not only i XP Remote sequential number (Example: E2-1, E50-3). For details on the external volume group number, see “Registering a Volume to an External Volume Group (ExG)”onpage21.

Figure 3 on page 18 shows the idea of connection between a storage system and an external storage

system which are connected by the External Storage function. In the Figure 3 on page18, theexternal storage system is connected to the external port of the storage system via a switch using the Fibre Channel interface. The external port is a kind of port attribute, which is used for External Storage. In the

3 on page 18, the external volumes are mapped as storage system volumes.

Figure

Note:

Make sure that you do not access the external volume, which has been mapped as a storage system volume, from the host that is connected to the external storage system. Also make sure that you do not access the mapped external volume using the function (for example, copy function) of the external storagesystem. Once youhavemappedanexternalvolumeasastoragesystem volume, you haveto access the mapped external volume only from the storage system side.

From the host, you can access the external storage system volumes that have not been mapped as

Note

the storage system volumes. There is no restriction.

External Storage System

orage enables you to use HP storage systems, original equipment manufacturer (OEM) storage

t numbers to the external volumes, the system administrator will be able to manipulate

nternal volumes of storage system but also external volumes using HP StorageWorks

Web Console. The management numbers consist of external volume group number -

XP24000 External Storage Software User’s Guide

Figure 3 Concept of External Storage

By mapping an external volume as an internal volume using External Storage as shown in

Figure 3

if it is a

on page 18, it becomes possible to operate the external volume using Remote Web Console as

volume in the storage system.

External Storage Components

Systems using External Storage usually contain the following components:

• Local storage system (storage system)

• External storage system

• Remote Web Console computer

• External Storage

• External volume

• Internal volume, which is a virtual representation of an external volume

• LDEVs(LogicalDevices)inanexternalvolume

• Cross-subsystem path

• Mapping path

The following ﬁgure illustrates the relations of the External Storage components.

About External Storage Operations

Figure 4

is section describes the details on the storage systems, cross-subsystem paths, volumes and mapping

aths as shown in the above ﬁgure.

External Storage Components

Storage Systems and Cross-subsystem Paths

Before using External Storage, connect the Fibre Channel port of the local storage system to the external storage system port with the ﬁbre cable. The route between ports, which is connected with the cable, is called the cross-subsystem path.

The Fibre Channel port of the local storage system is set to connect to the host by default. The Fibre Channel port can be connected to an external storage system if you change the attribute of the Fibre Channel port so that it is an external port, which can be connected to an external storage system. The external storage system port can be a target port, which can be connected to a host.

To manipulate External Storage, you need to install External Storage by using the license key. Use your Remote Web Console computer to access the local storage system via SVP (web server) and perform the External Storage operations.

Volumes and Mapping Paths

Volumes in the external storage system (see C in Figure 4 on page 19) are called external volumes. Mapping is necessary to manipulate an external volume from the local storage system. The system administrator maps an external volume as an internal volume (see B in Figure 4 on page 19) in the local storage system. After the mapping, you can manipulate the external volume from the local storage system in the same way as manipulating an internal volume.

Note:

When external volumes in external storage systems are mapped as internal volumes in your storage systems, the external volumes can be accessed and copied by hosts connecting to your storage systems, but not by hosts connecting to the external storage systems.

XP24000 External Storage Software User’s Guide

This document sometimes uses the term external volume or mapped external volume to mention an internal volume where an external volume is mapped (see B in Figure 4 on page 19), because this internal volume is a virtual representation of an external volume.

When you perform mapping, a path is automatically created between an internal volume and an external volume. This path is called a mapping path, which connects one volume with another volume. A cross-subsystem path is a part of a mapping path.

To use the external volumes, which you mapped as an internal volume (see B in Figure 4 on page 19), from the host or other program products, the system administrator needs to create LDEVs in the external volume (see A in Figure 4 on page 19). To create LDEVs, use External Storage at the time of mapping, or use VLL function to an internal volume where an external volume is mapped after mapping. The LDEVs created by these methods are called LDEVs in the external volume in this document. These LDEVs are usually called external volumes in other documents.

An external volume corresponds to a VLL VDEV (Virtual Device). An LDEV in the external volume corresponds to a VLL LDEV. Therefore, you can use VLL function to create custom-sized volumes in an external volume after mapping, in the same way as creating custom-sized volumes in the normal internal volumes. For details on VDEVs and LDEVs, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.

External Storage Operations

External Storage enables you to execute the following operations.

• Preparing to use external volumes

You can map paths. For details, see “Conﬁguring External Storage” on page 20, and section “Overview of Setting Operations”onpage67.

• Preparing to manipulate the power supply of the storage systems

You must follow speciﬁc procedures if you want to manipulate the power supply of the storage systems when external volumes are used. To turn on or off the power supply of the external storage Externa

• Setting up and removing the cross-subsystem paths

When you set up or remove the path (cable) connecting the storage systems, you need to use Ex “Disconnecting External Storage System or Disconnecting External Volume” on page 89 and section “Checking Connection Status and Resuming External Volume Operation” on page 91. For details on setup, see “Conﬁguring Cross-subsystem Path” on page 81.

• Refer

You ca “ Checking the External Volume Details” on page 83.

• Stopping the use of external volumes

You can cancel mapping of external volumes. For details, see “Dele

• Setting the remote command device

By using the remote command device, you can manipulate volumes in the external storage system from the HP StorageWorks XP RAID Manager on host computers. For details, see “Rem

l Storage. For details, see “Turning On or Off the Storage System” on page 87.

ring to the status of external volumes

n see the status and the conﬁguration of external volumes. For details, see

ting the External Volume Mapping” on page 96.

ote Command Devices”onpage99.

external volumes, set port attributes, and set cross-subsystem

system after starting to use the external volumes, you need to execute the commands of

ternal Storage to make settings on the path. For details on removal, see

Conﬁguring External Storage

Before conﬁguring the External Storage settings, you need to answer the following:

• Which ports can be connected to external storage systems (see

“Choosing the External Port”on page21).

• Which external storage system and volumes should be mapped as the internal volumes (see

“Choosing and Mapping External Volumes” on page 21).

About External Storage Operations

• How to conﬁgure external volume groups (see

“Registering a Volume to an External Volume Group (ExG)”onpage21).

• What external volume attributes to be conﬁgured (see

“Conﬁguring External Volume Attributes”onpage22).

•

How to conﬁgure cross-subsystem paths (see “Cross-subsystem Paths”onpage23).

• How tomakevolumeusablefromthe localstorage system (see

“Connecting Mainframe Volumes” on page 29 and section “Connecting Open Systems Volumes”onpage30).

Each item above is explained in the following sections.

Choosing the External Port

The port used for External Storage must be set as the external port. When the external storage system is connected to the external port of the local storage system, you can view the information on the external storage system from the Remote Web Console computer. The external storage system cannot be connected

In order to set the port attribute to external, the LU paths set to the port must be released. The attribute of theport where theLUpaths arealready set cannotbechanged to external. Therefore,you must identify ports whose attributes can be changed to external before starting the External Storage operations.

Note:

or other features cannot be used as external ports for External Storage. In addition, change the port attribute to external if the port attribute is set to other than external.

For instr “Settin

to the ports other than the external port.

The ports whose attributes are set for remote copy software (for example, RCU target, initiator)

uctions on conﬁguring port attributes, see

g Port Attribute for Local Storage System”onpage68.

Choosing and Mapping External Volumes

When you connect an external storage system to an external port, volumes in the external storage system (external volumes) become available for mapping as volumes in the local storage system (internal volumes). Identify the volumes in each external storage system that should be mapped as internal volumes.

• You cannot access the data that is stored in an external volume beyond the maximum available

capacity. For example, if an external volume of 100 GB was mapped as an internal volume of 70 GB, then 30 GB of theexternalvolume would notbeaccessiblefrom the localstorage system side.

• You cannot map an external volume whose capacity is smaller than the minimum available

capacity. For example, you cannot map an external volume of 10 GB as an internal volume which requires at least 30 GB.

The maximum or minimum available capacity of an external volume depends on the emulation type that is set when the volume is mapped. See “Required Volume Capacity for Each Emulation Type” on page 127 for the capacity of the external volume for each emulation type. For the maximum number of external volumeswhich canbemapped, see“External Storage Requirements”onpage43.

stering a Volume to an External Volume Group (ExG)

Regi

When you map an external volume as an internal volume, you need to register the external volume to an external volume group.

External volumes, which are set by External Storage, can be classiﬁed into groups by usage. Any group of this type is called an external volume group (ExG). For instance, you can register multiple volumes

ne external storage system to one external volume group. Or you can register the volumes in one

in o external volume group and manage them in block, even though the data you want to manage in a lump is stored in volumes in the different external storage systems.

XP24000 External Storage Software User’s Guide

You need to assign numbers to external volume groups. See “External Storage Requirements” on page 43 for details on a maximum number of external volume groups, or a maximum number of volumes to be registered in one external volume group.

Conﬁguring Ex

When you map an volume. External volume attributes can be set using the mapping policy or the Set External Volume Parameter dialog box of the External Storage. For details on the mapping policy, see “Choosing Mapping Policy” on page 30. For details on the Set External Volume Parameter dialog box, see “Set Exte

The attribut

• Emulation type

Select an emulation type for the mapped external volume from the drop-down list. The emulatio existing dat migrate the existing data in the external volume to the local storage system volume, you have to set the OPEN-V emulation type when the external volume is mapped. If you selec for management data. Once this area is provided, volume capacity after the mapping becomes less than the actual external volume capacity for the area (volume). For details on volume capacity, see “Capacity Guidelines”onpage45.

• Cache Mode

Cache mode speciﬁes whether the write data from the host to the external storage system is propagated synchronously or asynchronously. All I/O to and from the local storage system (either Enable or Disable) always uses cache. Write operations are always backed up in duplex cache.

•If you sel the local asynchronously destages the data to the external storage system cache where it is then asynchronously destaged to disk.

•If you se complet external storage system cache. The external storage system cache then asynchronously destages this data to disk. If you perform the HP StorageWorks XP Cache Residency Manager operation on the external volume, which the Cache Mode is set to Disable, the bind mode of Cache Residency Manager cannot be speciﬁed. For the Cache Residency Manager operation, see the HP StorageWorks

XP240

• Inﬂow Control (Enable or Disable)

Inﬂow control speciﬁes whether the writing operation to the cache memory is stopped (Enable)or continued (Disable) when the writing operation to the external volume is impossible. By default, inﬂow control is set to Disable

•If yo accepted when the writing operation to the external volume is impossible.

•If you select Disable, the I/O from the host during the retry operation is written to the cache memory even after the writing operation to the external volume is impossible. Once the wri is written to the external volume (all the data is destaged).

• CLPR

n the cache memory is partitioned using HP StorageWorks XP Disk/Cache Partition,

Whe

ﬁgure a cache logical partition (CLPR) to access the mapped volume. Please see the HP

con

orageWorks XP24000 Disk/Cache Partition User’s Guide for the detailed information on CLPR.

ternal Volume Attributes

external volume as an internal volume, you set the attributes of the external

rnal Volume Parameter Dialog Box” on page 72.

es of the external volume are as follows:

ntype OPEN-V must be selected if, after the mapping, you are planning to use the

a in the external volume from the local storage system. For example, if you want to

t the emulation type other than OPEN-V,the volume requires aspeciﬁcareaprovided

(Enable or Disable)

ect Enable, after receiving the data into the local storage system cache memory,

storage system signals the host that an I/O operation has completed and then

lect Disable, the local storage system signals the host that an I/O operation has

ed only after the local storage system has synchronously written the data to the

00 Cache Residency Manager User’s Guide.

uselect Enable,the writingoperation to cacheisstoppedand theI/O from thehostisnot

ting operation to the external volume becomes normal, all the data in the cache memory

About External Storage Operations

Cross-subsyste

A cross-subsystem path is a route from a local storage system port to an external storage system port. To prepare for possible failures of the cable, the switch, or the channel processor, it is recommended that you create redu operations to the external volumes when you maintain the cable. You can set up to eight paths.

A group of redundant cross-subsystem paths is called a path group. In a path group, the cross-subsystem path that has the highest priority is called the primary path. The cross-subsystem paths other than priority path are calle

• Setting of the path groups

A path group is automatically set when you map the external volume. You cannot set a new path group by itself.

• Setting of cr

Use ﬁbre cabl storage syst of the local If multiple (that is, e show the po an external volume. In this dialog box, you can set cross-subsystem paths by selecting the starting points and the ending points of the paths according to the actual cable connections. For details on how to set cross-subsystem paths, see “Conﬁgure Cross-subsystem Paths Dialog Box”onpage78.

• Setting of redundant cross-subsystem paths

You can se cross-subsystem paths. You can also add an alternate path or change the priority after completing the mapping of the external volume (see “Setting the Cross-subsystem Paths” on page 78).

mPaths

ndant cross-subsystem paths. This redundancy allows you to continue performing the I/O

d alternate paths.

oss-subsystem paths

es to establish multiple paths between the external storage system and the local

em. At this time, connect to the external storage system from the different cluster port

storage system.

paths are established between the two storage systems, the starting points of the paths

xternal ports of the local storage system) and the ending points (that is, WWNs which

rts of the external storage system) will be displayed in a dialog box when you map

t redundant cross-subsystem paths (add alternate paths) when you set the

Path Mode

Path mode is either Single mode or Multi mode, depending on the connected external storage system.

• In the Single mode, only the path with the highest priority (primary path) is used to execute the

I/O to the external volume. When an error occurs in the primary path, the path with the second highest priority is used.

• In the Multi mode, all of the set paths are used at the same time. The multiple paths are used to

executethe I/Os to theexternalvolumethusdistributing the work load (round-robin processing).

For example, when a volume in the external storage system with the path mode of the Single mode is mapped as an internal volume using External Storage, the host I/O operations to the external volume are enabled using the primary path set in the mapping operation. The path is automatically switched to the alternate path when the primary path set in mapping operation cannot be used due to, for instance, maintenance operation in the storage system, or a failure in the channel processor. Because the path is switched to the alternate path, the I/O operation to the external volume continues even though an error occurred in the original path.

Note:

When the primary path cannot be used for three minutes continuously, the path is switched

to the alternate path.

Examples of Alternate Paths

Figure 5 on page 24 illustrates an example of setting an alternate path. In Figure 5 on page 24, external

rage system ports, WWN A and WWN B, are connected to CL1-A and CL2-A respectively, which are

sto

t to the external ports in the local storage system. You need to specify the port of a different cluster

the local storage system for the alternate path. Therefore, CL1 port and CL2 port are speciﬁed as

in shown in Figure 5 on page 24.

XP24000 External Storage Software User’s Guide

Figure 5 Example of Alternate Path Setting

Figure 6 on page 24 illustrates an example of setting an alternate path when a switch is used. In Figure 6 on page 24, two ports are speciﬁed in the local storage system, and connected to the ports in

the external storage system through the switch. In this case, two ports of different clusters are speciﬁed in the local storage system. Therefore, the setting of the alternate path is enabled.

Figure 6 Example of Available Alternate Path Setting

In Figure 7 on page 25, two paths are also set between the internal volume and the external volume. However, one port is speciﬁed in the local storage system, and two ports are speciﬁed in the external storage systems over the switch. This conﬁguration is not recommended because two ports of different clusters need to be set in the local storage system for alternate path settings in External Storage.

About External Storage Operations

Figure 7 Example of Unavailable Alternate Path Setting

Examples of Switching I/O Execution Paths to Alternate Paths

This section describes the case examples of the performance when the I/O execution path is switched to the alternate path for each path mode as follows:

• When the path mode is Multi mode.

• When thepathmodeis Singlemode.

• When the path mode is Single mode and there is at least one alternate path in the Standby status.

For the description about the path status, see “Mapping Path Information Dialog Box” on page 84.

• When the path mode is Multi mode

Figure 8 on page 26 shows an example of the case when the path mode is Multi mode. When

an error occurs in one path, I/Os are executed using the paths other than the error path.

Note:

As you restore the error path, the use of the restored path is automatically resumed.

XP24000 External Storage Software User’s Guide

Figure 8 When the Path Mode is Multi Mode

• When t

Figur

an err

he path mode is Single mode

e 9 on page 27 shows an example of the case when the path mode is Single mode. When

or occurs in the path that is being used for I/Os, the I/O execution path is switched to the

path with the second highest priority.

Note:

As you restore the path with the priority higher than the currently used path, the I/O

execution path is automatically switched to the restored path that has the highest priority.

About External Storage Operations

Figure 9 When the Path Mode is Single Mode

• When t

Figur

he path mode is Single mode and there is at least one alternate path in the Standby status

e10 on page 28 shows an example of the case when the path mode is Single mode, and

there are the alternate paths in the Normal status and the Standby status. Figure 11 on page 29 shows another example of the case when the path mode is Single mode. In the case of

Figure 11 on page 29, there are alternate paths in the Standby status only.

When an error occurs in the path that is being used for I/Os, the I/O execution path is switched to the path with the second highest priority in the Normal status (see Figure 10 on page 28). If there is no path in the Normal status other than the path that is being used for I/Os, the status of the path in the Standby status is automatically changed to Normal, and the I/O execution path is

tched to that path (see Figure 11 on page 29).

swi

Note:

Only when the external storage system is EVA storage system, as you restore the path with the highest priority, the I/O execution path is switched back to the restored highest priority path. In this case, the status of the path for which the status has been changed to Normal when the error has occurred is changed back to Standby.

XP24000 External Storage Software User’s Guide

Figure 10 Single Mode with Alternate Paths in Normal and Standby

About External Storage Operations

Figure 11 Single Mode with Alternate Paths in Standby only

Connecting Mainframe Volumes

Mainframe volumes, that pre-exist on an external storage system and are accessed by ESCON or FICON channels, cannot connect directly to the storage system as an external volume. The storage system does not recognize these volumes because of the Fibre Channel.

To use external volumes as mainframe volumes, there are two ways:

• Zero-format external volumes on the external storage system side, map the external volumes to the

internal volumes using External Storage on the local storage system side, and then perform the Write to Control Blocks operation using the VLL function on the local storage system side.

• Map the external volumes to the internal volumes using External Storage on the local storage

system side, and then format the mapped external volumes using the VLL function on the local storage system side.

If you set the emulation type for the mainframe system (such as 3380 or 3390, shown in “Required Volume Capacity for Each Emulation Type” on page 127) as you map the external volume, the status of the mapped volume becomes Blockade after the mapping operation. After the system administrator performs the Write to Control Blocks operation or formats the mapped external volumes using VLL function on the local storage system side, the mainframe host can then access the new mainframe volume through the local storage system’s ESCON or FICON channels.

XP24000 External Storage Software User’s Guide

Note:

If you format the mapped volume of the external storage system from the external storage system side, the existing data before formatting cannot be assured. When you use the mapped external volume from the mainframe OS, format the mapped volume from the local storage system side.

For the procedure of the volume formatting operation and the Write to Control Blocks operation, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.

Connecting Open Systems Volumes

Open systems as open syst connection to initiali of the volu Volume Shredder User’s Guide.

OPEN-V emulation is recommended because, in most cases, OPEN-V emulation provides the most efﬁcient u retain ex

volumes in external storage system connect to and are recognized by the storage system

ems volumes, without requiring reformatting. Reformatting is not required because the

between the storage system and the external storage system is Fibre Channel. If you need

ze the data area for the volume, format the volume using the VLL function. For the procedure

me formatting operation, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and

se of storage and the best performance. Also, emulation types other than OPEN-V may not

isting data after being mapped.

Choosing Mapping Policy

Policy is a list of settings of the necessary information for mapping the external volume. By setting the mapping policy in advance, the setting at the time of mapping will be easier.

Two policies are prepared in advance. The user can change the default value of the policy. For details on the default value, see “Edit Policy Dialog Box” on page 95.

Difference between Automatic Mapping and Manual Mapping

When you map the external volume, you need to conﬁgure:

• cross-subsystem paths

• extern

• LDEV number to LDEVs in the external volume

• SSID

When yo settings above are automatically made by External Storage according to the mapping policy. When you perform manual mapping, users conﬁgure all the settings.

al volume parameters

u perform automatic mapping, users conﬁgure only cross-subsystem paths and all the other

Automatic mapping maps all the external volume found by the Volume Discovery to the internal volumes. Automatic mapping requires less settings but you are not allowed to set different parameters to each external volumes or to specify LDEV number to each LDEVs. You can set the parameters such as emulation type to mapping policy in advance.

For the procedure of automatic mapping, see “Mapping an External Volume Automatically” on page 69. For the procedure of manual mapping, see “Mapping an External Volume Manually” on page 69.

Port Discovery and Volume Discovery

Port Discovery and Volume Discovery are the methods used to ﬁnd external volumes, and will be executed when you map external volumes or when you add cross-subsystem paths.

Port Discovery is a process to search for and get information about target ports of the connected external storage system from an external port of the local storage system. The latest information about the external storage system can be displayed in a dialog box of External Storage when you execute Port Discovery.

You can set in advance the mapping policy on whether to execute the Port Discovery automatically or manually. If Port Discovery is executed automatically, WWNs connected to all the external ports of the local storage system will be searched for. If Port Discovery is executed manually, you can select a speciﬁc

About External Storage Operations

external port and limit the scope to search WWNs. If you can specify which external port to search for, you can reduce the operation time by executing the Port Discovery manually.

Volume Discovery is a process to search for and get information about external volumes from the target ports of the external storage system. Volume Discovery is automatically executed after the Port Discovery process.

Using a Mapped External Volume from a Connected Host

There are two ways of using the mapped external volume from a host that is connected the local storage syste

• Storing the new data in the mapped external volume (see

“Storing New Data in the Mapped External Volume” on page 31)

• Using the exi

“Using Existing Data in the Mapped External Volume” on page 32)

Storing New Data in the Mapped External Volume

To store new data in a mapped external volume from a host that is connected to the local storage system:

1. Map the volume in the external storage system as an internal volume of the local storage system

using External Storage. Select the emulation type of the mapped volume as you required. If you select the emulation type for the open system (such as OPEN-V), go to step 2. If you select the emulation type for the mainframe system (such as 3390-3), go to step 3. For information on mapping operations, see “Mapping an External Volume Automatically”onpage69.

2. If you set the emulation type for the open system when you map the volume, the status of the

mapped volume automatically becomes Normal. If you need to initialize the data area of the mapped volume, format the volume using the VLL function. For the volume formatting procedure, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide. Go to step 4.

3. If you set the emulation type for the mainframe system when you map the volume, the status of

the mapped volume becomes Blockade. Format the volume using the VLL function. Note: For zero-formatted external volumes, when you select that volume to map, you can use the VLL function to perform the Write to Control Blocks operation to restore the volume. For instructions on how to format volumes and the Write to Control Blocks operation, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide. Go to step 4.

4. To perform the host I/O operations, set the LU path from the Target port to the mapped volume.

After the LU path is set, the host I/O operation to the mapped volume becomes available.

sting data in the mapped external volume (see

XP24000 External Storage Software User’s Guide

Figure 12 Storing the New Data in the Mapped External Volume

Using Existing Data in the Mapped External Volume

To use the existing data in the mapped external volume from the host that is connected to the local storage system:

1. Store the data from the host that is connected to the external storage system to the volume in

the external storage system.

2. Map the volume containing data in the external storage system as an internal volume of the

local storage system using External Storage. When you map the external volume, set the attributes of the mapped volume as follows:

•Emulation type: OPEN-V For information on mapping operations, see

“Mapping an External Volume Automatically”onpage69.

Note:

You have to set the emulation type to OPEN-V to read the existing data in the mapped

external volume from the local storage system side.

3. Set the LU path from the Target port to the mapped volume to perform the host I/O operation.

After the LU path is set, the host I/O operation to the mapped volume can be initiated.

Note:

Make sure that you do not access the external volume, which has been mapped as a internal volume, from the host that is connected to the external storage system. Also make sure that you do not access the mapped external volume using the function (for example, copy function) of the external storage system. Once you have mapped an external volume as an internal volume, you can access the mapped external volume only from the local storage system side.

Note:

From the host, you can access the external storage system volumes that have not been mapped as the internal volumes. There is no restriction.

About External Storage Operations

Figure 13 Using the Existing Data in the Mapped External Volume

Interope

rability with other Products and Functions

Youcan usethe storagesystemprogram products to utilizeand to manage theexternalvolumes you have set using External Storage.

The storage system program products that support the use of mapped external volume are explained in the following subsections. For the operations and notes on each program product, see the respective user’s g

uides.

HP StorageWorks XP LUN Manager

If you set the emulation type for the open system as you map the external volume, you need to set the LU path for the mapped volume using LUN Manager.

Consider the following for the Conﬁguration File Loader function:

• You can to set the LU path deﬁnition for the external volume (add, delete, or change LU paths).

• You can to set the command device for the external volume (add or delete the setting).

• The setting of the channel adapter (CHA) mode, host group, and WWN for the external port

is not supported. When an external volume is mapped through that external port, the setting operation of the topology is not available, either.

HP StorageWorks XP LUN Expansion (LUSE)

Consider the following for LUN Expansion (LUSE):

• The s

torage system internal volume and the external volume cannot be combined to form a

LUSE volume.

XP24000 External Storage Software User’s Guide

• Do not combine LDEVs of multiple external volumes to create a LUSE volume. Only the LDEVs in

the same external volume can be used to conﬁgure the LUSE volumes.

• The external volumes, for which the different Cache Mode is set, cannot be combined to form

aLUSE volume.

HP StorageWorks XP Virtual LVI/LUN (VLL)

Consider the following for Virtual LVI/LUN (VLL):

• If you set the e

to format the mapped volume or perform the Write to Control Blocks operation using the VLL function before you use the external volume. For the formatting operation procedure and the Write to Control Blocks operation procedure, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.

• If you create

LDEVs becom

mulation type for the mainframe system as you map the external volume, you need

LDEVs in an external volume using the VLL function, the cache mode of the created

e the same as those of the source external volume.

Cache Residency Manager

Consider the following for Cache Residency Manager:

• Thebindmodeofthe CacheResidency Manageroperation cannot be speciﬁed for the external

volume if the Cache Mode is set to Disable.

• If you use the mapped external volume for the Cache Residency Manager operation and set

the bind mode, a cache of twice as much capacity as the user data is required for the Cache Residency Manager operation.

HP Stora LUN Soft

geWorks XP Performance Monitor and HP StorageWorks XP Auto

ware

Consider the following for Performance Monitor and Auto LUN:

• Performance Monitor can be used to display the monitoring information about the external

volumes

• Mapped volumes can be used for Auto LUN. For adjusting volume capacity, see

“Adjusting Volume Capacities for Pairs”onpage133. For the conﬁguration example of Auto LUN, see “Auto LUN Operations” on page 35.

HP StorageWorks XP Continuous Access Software

Mapped volumes can be used for Continuous Access. For adjusting volume capacity, see “Adjusting Volume Capacities for Pairs” on page 133.

For the conﬁguration example of Continuous Access, see “Continuous Access Operations” on page 36.

TrueCopy for Mainframe

ed volumes can be used for TrueCopy for Mainframe. For adjusting volume capacity, see

Mapp

usting Volume Capacities for Pairs” on page 133.

“Adj

HP StorageWorks XP Continuous Access Journal Software

Mapped volumes can be used for Continuous Access Journal. For adjusting volume capacity, see “Adjusting Volume Capacities for Pairs” on page 133.

For the conﬁguration example of Continuous Access Journal, see “Continuous Access Journal Operations” on page 37.

About External Storage Operations

Universal Repli

Mapped volumes can be used for Universal Replicator for Mainframe. For adjusting volume capacity, see “Adjusting Volume Capacities for Pairs”onpage133.

cator for Mainframe

HP StorageWorks XP Business Copy Software

Mapped volumes can be used for Business Copy. For adjusting volume capacity, see “Adjusting Volume Capacities for Pairs”onpage133.

For the conﬁguration example of Business Copy, see “Business Copy Operations” on page 39.

ShadowImage for Mainframe

Mapped volumes can be used for Business Copy for Mainframe. For adjusting volume capacity, see “Adjusting Volume Capacities for Pairs”onpage133.

HP StorageWorks XP Snapshot

Mappedvolumes canbeusedfor XP Snapshot. For adjusting volume capacity, see “Adjusting Volume Capacities for Pairs”onpage133.

SNMP Agent

Consider the following for SNMP Agent:

• The inform

• The information on the External port is displayed.

ation on the mapped external volume is displayed.

Examples of Using External Volumes with Other Products

For the following storage system program products, the examples of using external volumes are described in the following subsections:

•

Auto LUN (see “Auto LUN Operations” on page 35)

•

Continuous Access (see “Continuous Access Operations” on page 36)

•

Continuous Access Journal (see “Continuous Access Journal Operations” on page 37)

•

Business Copy (see “Business Copy Operations” on page 39)

•

XP Snapshot(see“XP Snapshot Operations” on page 40)

Auto LUN Operations

Figure 14 on page 36 shows the use of an external volume for the Auto LUN operation. In Figure 14 on page36, themappedexternalvolumeisset as thesourcevolumeand thelocal internal

e is set as the target volume. Existing data in the external volume is migrated manually to the local

volum

ge system internal volume using Auto LUN. For detailed information on the Auto LUN operation, see

stora

PStorageWorksXP24000AutoLUNSoftwareUser’sGuide.

the H

rocedure for the operation is described as follows:

The p

1. Use External Storage to map a volume in the external storage system as an internal volume

of thelocal storagesystem. For the case such as Figure 14 on page 36, set the attributes of the mapped volume as follows:

• Emulation type: OPEN-V

details on the mapping operation, see

For “Mapping an External Volume Automatically”onpage69.

XP24000 External Storage Software User’s Guide

Note:

To migrate the existing data in the mapped external volume to the local storage system volume using Auto LUN, set the emulation type to OPEN-V as you map the volume. The emulationtypemustbe OPEN-V to read out the existing data in the external volume from the local storage system side.

Caution:

products of Remote Web Console such as Continuous Access and Business Copy, the emulation type of the mapped external volume also has to be OPEN-V.

2. Prepare the local internal volume that has the same capacity as the mapped external volume.

Adjust the capacity of the internal volume as it is required using the LUSE function and VLL function. For the LUSE function, see the HP StorageWorks XP24000 LUN Expansion User’s Guide.For the VLL function, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.

Note:

3. Set the mapped external volume as the source volume and local storage system internal volume

as the target volume.

4. Migrate the existing data in the mapped external volume to the local storage system internal

volume manually using Auto LUN.

To copy the existing data in the mapped external volume using the copy program

The emulation type of the prepared internal volume must be OPEN-V.

Figure 14 Example of the Auto LUN Operation

Continuous Access Operations

Figure 15 on page 37 shows the use of an external volume for the Continuous Access operation. In Figure 15 on page 37, the mapped external volume is set as the S-VOL of the Continuous Access pair,

and the volume in the local storage system that is connected as the multipoint control unit (MCU) is set as the P-VOL of the Continuous Access pair. For details on Continuous Access, see the HP StorageWorks XP24000 Continuous Access Software User and Reference Guide.

rocedure for the operation is described as follows:

The p

1. Use External Storage to map a volume in the external storage system as an internal volume of

the local storage system, which is used as remote control unit (RCU) for the Continuous Access operation.

an select the emulation type of the mapped volume as you required. If you select the

You c emulation type for the open system (such as OPEN-V), go to step 2. If you select the emulation type forthe mainframesystem(such as 3390-3), gotostep3.

About External Storage Operations

For details on the mapping operation, see “Mapping an External Volume Automatically”onpage69.

2. If you set the emulation type for the open system when you map the volume, the status of the

mapped volume automatically becomes Normal. However, the volume formatting processing is not executed automatically. If you need to format the mapped volume, format the volume using the VLL function. For the volume formatting operation procedure, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide. Go to step 4.

3. If you set the emulation type for the mainframe system when you map the volume, the status of

the mapped volume becomes Blockade. Format the volume using the VLL function. Or if you have mapped the volume for which the data area has already been zero-formatted on the external storage system side, perform the Write to Control Blocks operation using the VLL function to restore the volume. For the volume formatting operation procedure and the Write to Control Blocks operation procedure, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide. Go to step 4.

Set the P-VOL and S-VOL of the Continuous Access pair, as shown in Figure 15 on page 37.

Figure 15 Example of the Continuous Access Operation

Continuous Access Journal Operations

Figure 16 on page 39 shows the use of an external volume for the Continuous Access Journal operation.

In Figure 16 on page 39, the mapped external volume is set as the S-VOL of the Continuous Access Journal pair, and the volume in the local storage system that is connected as the MCU is set as the P-VOL of the Continuous Access Journal pair. For details on Continuous Access Journal, see the HP StorageWorks XP24000 Continuous Access Journal Software User and Reference Guide.

The procedure for the operation is described as follows:

XP24000 External Storage Software User’s Guide

1. Use External Storage to map the volume in the external storage system as an internal volume of

the local storage system, which is used as RCU for the Continuous Access Journal operation. You can select the emulation type of the mapped volume as you required. If you select the emulation type for the open system (such as OPEN-V), go to step 2. If you select the emulation type forthe mainframesystem(such as 3390-3), gotostep3. For details on the mapping operation, see “Mapping an External Volume Automatically”onpage69.

2. If you set the emulation type for the open system when you map the volume, the status of the

3. If you set the emulation type for the mainframe system when you map the volume, the status of

4. Set the P-VOL and S-VOL of the Continuous Access Journal pair, as shown in

Figure 16 on page 39.

About External Storage Operations

Figure 16

Example of the Continuous Access Journal Operation

Business Copy Operations

Figure 17 on page 40 shows the use of an external volume for the Business Copy operation. In Figure 17 on page 40, the mapped external volume is set as the S-VOL of the Business Copy pair, and

the local storage system internal volume is set as the P-VOL of the Business Copy pair. For details on Business Copy, see the HP StorageWorks XP24000 Business Copy Software User’s Guide.

The procedure for the operation is described as follows:

1. Use External Storage to map a volume in the external storage system as an internal volume

of thelocal storagesystem. You can select the emulation type of the mapped volume as you required. If you select the emulation type for the open system (such as OPEN-V), go to step 2. If you select the emulation type for the mainframe system (such as 3390-3), go to step 3. For details on the mapping operation, see “Mapping an External Volume Automatically”onpage69.

2. If you set the emulation type for the open system when you map the volume, the status of the

3. If you set the emulation type for the mainframe system when you map the volume, the status of

XP24000 External Storage Software User’s Guide

For the volume formatting operation procedure and the Write to Control Blocks operation procedure, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide. Go to step 4.

Set the P-VOL and S-VOL of the Business Copy pair, as shown in Figure 17 on page 40.

Figure 17 Example of the Business Copy Operation

XP Snapsh

Figure 18 on page 41 shows the use of an external volume for the XP Snapshot operation. In Figure 18 on page 41, the mapped external volume is set as a pool-VOL of the XP Snapshot pair. For

details The proc

1. Use External Storage to map a volume in the external storage system as an internal volume

2. The status of the mapped volume automatically becomes Normal. However, the volume

3. Crea

4. Set the P-VOL and S-VOL of the XP Snapshot pair with specifying the pool you have created

ot Operations

on XP Snapshot, see the HP StorageWorks XP24000 Snapshot User’s Guide.

edure for the operation is described as follows:

of the local storage system.

Caution:

the volume with the OPEN-V emulation type can only be set as a pool-VOL of XP Snapshot. For det “Mapping an External Volume Automatically”onpage69.

formatting processing is not executed automatically. If you need to format the mapped volume, format the volume using the VLL function. For the volume formatting operation procedure, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.

at step 3.

Set the emulation type of the volume to OPEN-V when you map the volume, because

ails on the mapping operation, see

te a pool and add the mapped external volume to that pool as a pool-VOL.

About External Storage Operations

Figure 18

Example of the XP Snapshot Operation

XP24000 External Storage Software User’s Guide

About External Storage Operations

3 Preparing for External Storage Operations

This chapter describes the requirements, preparations, and notes on the External Storage operations.

System Requirements

The system requirements for External Storage are:

• Storage syst

All the neces installed a

• Storage system other than the ﬁrst storage system

A second storage system must be available and operate as an external storage system. The kinds of storage systems that can be used as an external storage system include the EVA 8000, EVA 50 informati “Storage Systems Supported as External Storage Systems”onpage43.

• Remote Web Console computer (user-supplied computer)

Please see on installing and using the Remote Web Console computer.

Note:

Storage operations. Users in View mode can only view External Storage information.

• License k

You need a license key to install External Storage.

em (First storage system)

sary hardware and microcode required for External Storage operations must be

nd enabled. In this user’s guide, the ﬁrst storage system is called local storage system.

00, and MSA storage systems, and other similar storage systems. For detailed

on on the storage systems that can be used as the external storage system, see

the HP StorageWorks XP24000 Remote Web Console User’s Guide for instructions

You must operate the Remote Web Console computer in Modify mode to perform External

ey for External Storage program product

Storage Systems Supported as External Storage Systems

For the storage systems that are currently supported as external storage, contact HP.

External Storage Requirements

The following table describes the External Storage requirements.

XP24000 External Storage Software User’s Guide

Table2ExternalStorageRequirements

Item

Maximum number of ports in the connected external storage system (WWN is used as number）

Maximum number of external volumes which can be connected

Maximum number of mapping paths can be set for one external volume

Maximum capacity of an external volume

Minimum capacity of an external volume

Maximum number of external volume groups

a port identiﬁcation

Requirement

1, 02 4 p e r p o r t

63,232 volumes can be connected. 4,096 volumes can be connected per port.

Note:

If you use XP Snapshot or HP StorageWorks XP Thin Provisioning Software, the number of external volumes which can be connected is as follows:

Number of external volumes + Number of virtual volumes ≤ 63,232

2TBper external volume If you specify an external volume which is more than 2 TB you

can access the data stored in the ﬁeld up to 2 TB. You cannot access the data that is stored in the ﬁeld over 2 TB.

77,760 blocks (about 38 MB) per external volume. However, when the emulation type of the volume is OPEN-V,

the minimum capacity becomes 96,000 blocks (about 47 MB) per external volume

16 ,3 8 4

Maximum n which can volume g

umber of external volumes

be registered in one external

roup

4,096

Guidelines for External Storage Operations

Guidelines for the External Storage operations are as follows:

Mappin

Recommended Applications according to the HDD Type

gGuidelines

• Make sure that you do not access the external volume, which has been mapped as a storage

system volume, from the host that is connected to the external storage system. Also make sure that you do not access the mapped external volume using the function (for example, copy function) of

ternal storage system. Once you have mapped an external volume as a storage system

the ex

e, you have to access the mapped external volume only from the storage system side.

volum

• From the host, you can access the external storage system volumes that have not been mapped as

the storage system volumes. There is no restriction.

• Do no

Table 3 on page 45 and Table 4 on page 45 show the recommended level of the application of mapped

external volume according to the HDD type of the external volume.

t map multiplatform volumes of external storage systems as internal volumes.

Preparing for External Storage Operations

Table3WhentheEmulationTypeoftheExternalVolumeisforOPEN

Application

HDD Type FC SATA

Database Online Transac

File Operation from Host (Both of Read and Write)

File Operation from Host (Mainly Read)

Backup Archive

tion Processing (OLTP)

Not Recommended Not Recommended

OK OK

Not Recommended

Recommended Recommended

Table4WhentheEmulationTypeoftheExternalVolumeisforMainframe

Application

HDD Type FC SATA

Database Online Transaction Processing (OLTP)

System Volumes (Journal, Check points)

Operation from TPF

Not Recommen

Not Recommended Not Recommended

NotSupported NotSupported

ded

Not Recommen

ded

File Operati (Both of Read

File Operation from Host (Mainly Read)

Backup Archive

on from Host

and Write)

Capacity Guidelines

• When a volume, which has the capacity of 2 TB or less, in the external storage system (external

volume) is mapped with the setting of OPEN-V emulation type, the volume is deﬁned as the internal volume that has the same capacity as the mapped external volume.

OK OK

Not Recommended

Recommended Recommende

XP24000 External Storage Software User’s Guide

Figure 19 Example of External Volume of 2 TB or Less

• You cannot access the data that is stored in the ﬁeld over the maximum capacity of the external

volume. The maximum volume capacity differs depending on the emulation type that you specify at the external volume mapping. See “Required Volume Capacity for Each Emulation Type”on page127 for more details.

• When an external volume is mapped as internal volume(s) with the setting of the emulation type

other than OPEN-V, the number of volumes and the volume capacity of the mapped external volume(s) depend on the capacity of the original external volume and the basic capacity of each emulation type. When an external volume is mapped with the setting of emulation type other than OPEN-V, the data management information area is required to be provided in the mapped volume. This means that the capacity that can be used after the mapping becomes smaller than the actual external volume capacity. The available capacity decreases as much capacity as the data management information area.

Figure 20 on page 46 showsanexample of thecasethatthe original capacity of theexternal

volume is bigger than the basic capacity of the emulation type. In Figure 20 on page 46, the emulation type is OPEN-3. Figure 21 on page 47 shows an example of the case that the original capacity of the external volume is smaller than the basic capacity of the emulation type.

Figure 20 When the External Volume Capacity is Bigger than the Basic Capacity of Speciﬁed Emulation Type (Example of the OPEN-3 emulation type)

Preparing for External Storage Operations

Figure 21 Whe Speciﬁed Em

n the External Volume Capacity is Smaller than the Basic Capacity of

ulation Type

Guidelines for Mainframe Volumes

• If you plan to use the mapped external volume from the mainframe OS (the volume is mapped

with the setting of 3380-x or 3390-x mainframe emulation type), you need to select the external volume that consists of one LDEV or you need to adjust the capacity of the external volume to be mapped beforehand. If multiple LDEVs exist in one external volume and if a lot of I/Os are made to these LDEVs, the read, write commands may become timeout. When the commands become timeout, the SIM (21D2xx) is reported.

• When you use the mappedexternalvolumefrom the mainframeOS, setthe MIH (M

nterrupt Handler) timer to 45 seconds (which is the recommended value).

Volume Attribute Guidelines

• The external volume attributes for all the LDEVs created in an external volume become the same.

The attributes are taken over, when the LDEVs are reconﬁgured using the VLL function.

• The Cach

• The attributes that are set for the external volume originally on the external storage system side

(such as the port security, the LUN security, the HP StorageWorks XP Volume Retention Manager attributes, and so on) are not kept, when the external volume is mapped as an internal volume. If the ori from t

• For the external volume, for which the Cache Mode is set to Disable, the bind mode for the Cache

Residency Manager operation is not available.

• If you

bind Residency Manager operation.

eMode becomes the same for all the LDEVs in one external volume.

ginal attributes are required to be set, set the attributes on the mapped external volume

he local storage system side.

use the mapped external volume for the Cache Residency Manager operation and set the

mode, the cache of twice as much capacity as the user data is required for the Cache

issing

Creating LUSE Volume Guidelines

• Do not combine LDEVs of multiple external volumes to create a LUSE volume. The LDEVs in the

same external volume can only be used to set the LUSE volumes.

• The mapped volumes that have different cache mode settings cannot be used to create one

LUSE volume.

ntenance Guidelines for an External Storage System

Mai

• Before you change settings of the external storage system, you must delete the external volume

mapping. After you change settings of the external storage system, you must remap the external volume. If you do not remap the volume, the external volume cannot be used in the local

torage system.

XP24000 External Storage Software User’s Guide

The examples of external storage system settings which require the re-mapping of external volume are as follows:

• Changing WWNs of target ports which connect to the local storage system

• Changing the serial number of the external storage system

• Changing LUNs of volumes of the external storage system

• Reducing the volume capacity of the external storage system so that the volume capacity is

smaller than when volume mapping was performed

Besides, re-mapping is required for External Storage after you change external storage system settings that require modiﬁcation on the host side when hosts are connected directly to a external storage system. Before you delete the external volume mapping, make sure that the volume has no LU paths, and that the volume is not a component of any pairs (such as Continuous Access pairs). For detailed information on deleting the external volume mapping, see “Deleting the External Volume Mapping” on page 96. For detailed information on mapping external volume, see “Mapping an External Volume Automatically” on page 69.

Performan

• The performance and status of the external storage system affect the Read and Write performance

• If the ho

• When you execute the commands of the storage system program products to the mapped external

• When you use an external volume from the host, note the Path Blockade Watch time for the

ce and Status Guidelines

of the mapped external volume. If there is a heavy load on the external storage system, the processing speed of the Read and Write operation becomes slow. In this case, the I/Os from the mainframe host may become MIH error.

st connected to the local storage system issues too many I/Os to be processed by the

al storage system, the commands from the host may possibly be timed out.

extern When th I/Os that the external storage system can accept, the commands from the host to the local storage system may possibly be timed out. As you conﬁgure the system using the external volumes, consider the capability for the I/O amount of the external storage system.

volume and thus too many I/Os are issued to be processed by the external storage system, the comm When the amount of I/Os from the program products to the external volume exceeds the maximum amount of I/Os that the external storage system can accept, the commands from the program products may possibly be timed out and an error may occur. As you conﬁgure the system using the external volumes, consider the capability for the I/O amount of the external storage system.

ext com or when an error occurs for the external storage system. If the host I/O is a signiﬁcant concern, make sure that the Path Blockade Watch time of the external volume is the same as or shorter than the timeout period of the host command.

eamountofI/Osfrom the host to theexternalvolumeexceeds themaximum amount of

ands may possibly be timed out and an error may occur.

ernal volume. If the Path Blockade Watch time is longer than the timeout period of the host

mand, the commands from the host may possibly be timed out when the power supply is off

RAID Level Considerations

In the internal processing, the RAID level of the external volume is handled as RAID-1 across the board. The bar (−) is displayed on the Remote Web Console windows. The RAID level of external volumes is reported as RAID-1 when information about external storage system is reported to the higher-level device (OS).

nstalling and Uninstalling External Storage

This section explains how to install and uninstall External Storage.

Preparing for External Storage Operations

Installing Exte

rnal Storage

You need to inst the Remote Web Console computer.

To install the External Storage license key:

1. Start the Remote Web Console Java application program for the desired storage system.

2. Enable the Exte

storage system.

For detail instructions, see the HP StorageWorks XP24000 Remote Web Console User’s Guide.

all External Storage using the license key to perform the External Storage operations on

rnal Storage options on the Remote Web Console computer and on each

Uninstalling External Storage

To uninstall External Storage, you must remove all the pairs and then delete the external volume mapping. To uninstallExternalStorage:

1. Start Remote Web Console, and open the Remote Web Console main window.

For instructions, see the HP StorageWorks XP24000 Remote Web Console User’s Guide.

Delete external volume mapping (see “Deleting the External Volume Mapping” on page 96).

3. Disable the External Storage option on the Remote Web Console computer and on each

storage system. For detailed information about the uninstallation procedure, see the HP StorageWorks XP24000 Remote Web Console User’s Guide.

Starting Ex

ternal Storage

This section explains how to start External Storage. To start External Storage and display the window you need:

1. Start Remo

For instructions, see the HP StorageWorks XP24000 Remote Web Console User’s Guide.

2. Click Go and then External Storage on the menu bar of the Remote Web Console main window.

Names of the windows which you need for External Storage operations are displayed in the submenu.

3. Click the n

External Storage starts up, and the window whose name you clicked in the submenu is displayed. For details about the displayed windows, see “Using the External Storage GUI” on page 51.

4. Switch to Modify mode if necessary.

For detail Guide.

te Web Console, and open the Remote Web Console main window.

ame of the window you want to display.

s on the instructions, see the HP StorageWorks XP24000 Remote Web Console User’s

XP24000 External Storage Software User’s Guide

Preparing for External Storage Operations

4UsingtheExternalStorageGUI

External Storage involves the Volume Operation window, the Path Operation window and the Port Operation window. When you click the tab of the window name, the window is switched to the corresponding window.

Volume Operation Window

The Volume Operation window enables you to perform the operations, such as mapping external volumes and setting c and then Volu

ross-subsystem paths. To display the Volume Operation window, click Go, External Storage,

me Operation on the menu bar of the Remote Web Console main window.

Figure 22 Volume Operation Window

The Volume Operation window consists of:

• Volume Operation Tree (left of the wind

Theleft paneofthe window is composed of atree, andadrop-downlistwhich is used to switch thedisplay of thetree. Thecontentsdisplayed in the list(rightofthe window)switchcorresponding to the items selected in the tree. For d

• Status:Disable button or Status:Enable button (upper right of the window)

When you click Status:Disable, the button name changes to Status:Enable and you can display the external volume status in the Ext. The Ext. VOL Status column does not display any status when you open the Volume Operation window, because to display the external volume status takes longer than displaying other items in the window.

ow)

etails on the tree, see “Volume Operation Tree” on page 52.

VOL Status column in the Volume Operation list.

XP24000 External Storage Software User’s Guide

•

Note

: To update all items in the window including the Ext. VOL Status column, make sure the button name isStatus:Enable,thenclick File and Refresh on the menu bar of the Remote Web Console main window.

• Volume Operation List(rightof the window)

Information on the local storage system and external storage system is displayed corresponding to the items selected in the tree. The list can be sorted by the displayed items. For instance, if you want to sort the list in the order of LDEV numbers, click LDEV on the list. The items clicked in the tree and the information displayed in the list are as follows:

Table 5 The Items Clicked in the Volume Operation Tree and the Contents Displayed

Items selected in the drop-down list

Items displayed in the tree

(Clicked items are

Contents displayed in the list

Reference

underlined)

Fibre

ubsystem

+Product name

+Path group

Subsystem

roduct name

+Path group

Subsystem

+Product name

ath group

Information about the external storage system.

Thesamecontents are displayed when you click the product name in the tree.

Information about the external storage system.

Thesamecontents are displayed when you click the Subsystem in the tree.

The list of external volumes and cross-subsystem paths which are set in the selected path group.

Section Volume

Operation List (When Subsystem or Product Name is Clicked) on

page 53.

Section Volume

Operation List (When Path Group is Clicked)

on page 54.

• Operation (lower left of the window)

The name of the performed setting operation is displayed. You can check the details in the Preview dialog box by clicking the Preview button.

• Preview button (lower right of the window)

When you click Preview, the Preview dialog box is displayed and you can conﬁrm the contents which was set in the list of the Volume Operation window. The contents displayed in the Preview dialog box have not been applied to the local storage system, yet. For details on the Preview dialog box, see “Preview Dialog Box” on page 57.

• Apply button

Applies the settings in the Preview dialog box to the local storage system. When the settings are applied successfully, they are removed from the Preview dialog box and the settings in blue and italics in the Volume Operation window is displayed normally. When the settings are not applied, the error messages are displayed and the settings in blue and italics remain displayed in the Volume Operation window. To see the error detail, click Preview to open the Preview dialog box.

• Cancel button

Cancels all the settings in the Preview dialog box.

Volume Operation Tree

TheVolumeOperation tree is atreeonthe left side of theVolumeOperation window consisting of atree and a drop-down list which is used to switch the display of the tree.

The Volume Operation tree consists of:

• Drop-down list

A drop-down list to switch the items displayed in the Volume Operation tree. You can select Fibre from the drop-down list as a PCB type.

Using the External Storage GUI

• Tree

Thefollowing itemsare displayedintreeformat. Thecontentsdisplayed in thelist(rightofthe window) switch corresponding to the items clicked in this tree. For details, see Table 5 on page 52.

• Subsystem: The root node of the Volume Operation tree which is always displayed.

• Product name of the external volume: The product name of the external storage system whose

volumes are mapped by External Storage is displayed below Subsystem.The display format is Vendor name: Product name (Serial number).

• Path group: The path group set in the external storage system is displayed under the product

name of the external storage system. When multiple path groups are set, the registration numbers are added after the Path Group (Example: Path Group 2).

• Pop-up menu

Right-click the item in the Volume Operation tree to perform the following operations from the pop-up menu.

Table6Pop-upMenuthatcanbeDisplayedintheVolumeOperationTree

Items displayed in the tree

(Clicked items are underlined)

Subsystem

+Product name

+Pathgroup

Subsystem

roduct name

+Pathgroup

Subsystem

+Product name

ath group

Pop-up Menu

• Add Volume (Auto)

• Add Volume

(Manual)

• Edit Policy

• Disconnect

Subsystem

• Check Paths &

Restore Volume

• Add Volume (Auto)

• Add Volume

(Manual)

Reference

• Section Mapping an External Volume Automatically on

page 69.

• Section Mapping an External Volume Manually on page

69.

• Section Editing Mapping Policy on

page 95.

• Section Disconnecting External Storage System or Disconnecting External Volume

on page 89.

• Section Checking Connection Status and Resuming External Volume Operation on page

91 .

• Section Mapping an External Volume Automatically on

page 69.

• Section Mapping an External Volume Manually on page

69.

Description

Displays the Conﬁgure Cross-subsystem Paths dialog box or the Add Volume (Manual) dialog box. These dialog boxes allow you to set a new path group, and add external volumes to the new path group.

Displays the Edit Policy dialog box. This dialog box allows you to edit the mapping policy.

Disconnects or reconnects the external volumes in the selected external storage system.

Displays the Conﬁgure Cross-subsystem Paths dialog box or the Add Volume (Manual) dialog box. These dialog boxes allow you to add external volumes to the existing path group.

Volume Operation List (When Subsystem or Product Name is Clicked)

When you click Subsystem or a product name in the Volume Operation tree, the external storage system information is displayed in the list.

XP24000 External Storage Software User’s Guide

Figure 23 Volum

e Operation List when Subsystem or a Product Name is Clicked

The Volume Ope

ration list consists of:

• External Subsystem

The following items are displayed:

• Vendor:Name o

f the vendor.

• Product Name: Name of the storage system.

• Serial Number: Serial number of the storage system.

• Ext. VOL Stat

us: Status of the operation executed to the external volume or status of the

connection of the mapping path. The displayed items are shown in the following table.

Table7Status of theExternal Volumedisplayed in theExt. VOL Status

Displayed I

Normal The path is normal.

Unknown Blockade The mapping path is blocked.

Warning

Checking

Cache Destage

tem

Description

The status of the mapping path is not retrieved yet. Click Status in the Volume Operation window to display the status of the mapping path.

The status o

There are mapping paths whose status is not normal. Check the status of the mapping paths in the Mapping Path Information dialog box.

The proces The writing processing of all the data in cache memory to the volume is in

progress.

f the mapping path is unknown.

sing of checking the mapping path status is in progress.

Disconnect

Connecting to the external storage system or the external volume is intentionally stopped using the Disconnect Subsystem command or the Disconnect Volume command.

• Information Area

Information according to the contents of the External Subsystem on the Volume Operation window is displayed in the information area. The displayed information is as follows:

• Total Number of Ext. Subsystems: the number of external storage systems that have the

mapped external volumes.

• Total Number of Ext. Volumes: the number of the mapped external volumes and the number

of the external volumes that can be mapped.

• Pop-up menu

The External Subsystem does not have a pop-up menu that can be displayed.

Volume Operation List (When Path Group is Clicked)

When you click a path group in the Volume Operation tree, the external storage system information and the cross-subsystem path information is displayed in the list.

Using the External Storage GUI

Figure 24 Volume Operation List when Path Group is Clicked

TheVolumeOperation list consists of:

• Externa

l Volumes

The following items are displayed:

• ExG: external volume group number and reference number assigned to each volume in the

external volume group. This is displayed in the format of external volume group number reference number of volume in the group. The reference numbers of volumes in the group are automa

tically assigned by External Storage when the external volumes are mapped.

• LDEV: LDKC:CU:LDEV number* which is assigned to the external volume. When multiple

LDEVs are created in the external volume, the top LDEV number is displayed, and [...] is

yed at the end of the number.

displa * LDKC: Logical Disk Controller CU: Control Unit

• Charac

teristic1:identiﬁcation number of the external volume.

• Device: product name that is reported to the host by the external volume. The displayed items

differs depending on the vendor of the storage system.

• Capac

ity (blocks): capacity of the external volume in Blocks.

• Cache Mode: displays whether the write data from the host to the external storage system is

propagated synchronously (Disable) or asynchronously (Enable).

• Inﬂow

Control: displays whether the writing operation to the cache memory is stopped

(Enable) or continued (Disable) when the writing operation to the external volume is impossible.

• Path Mode: Indicates how the cross-subsystem paths work. The displayed modes of the

s-subsystem path are as follows:

cros

• Single: For the Single mode, the only cross-subsystem path with the highest priority

(primary path) is used to execute the I/O to the external volume. When an error occurred in the primary path, the path with the second highest priority is used.

XP24000 External Storage Software User’s Guide

• Multi: For the Multi mode, all of the cross-subsystem paths that you conﬁgured are used

at thesametime. Themultiplepaths areusedtoexecute theI/Ostothe external volume distributing the work load.

• Ext. VOL Info: information about the external volume. When the external volume is a SATA

drive of the TagmaStore AMS storage system, the TagmaStore WMS storage system, or the Thunder 9500V series storage system, an asterisk (*) is displayed. For the operation of the SATA drive, follow the method of the TagmaStore AMS storage system, the TagmaStore WMS storage system, or the Thunder 9500V storage system.

• Ext. VOL Status: status of the operation executed to the external volume or status of the

connection of the mapping path. For the displayed statuses, see Table 7 on page 54.

• Progress: displays when the Status is Cache Destage. The progress status of destaging

processing is displayed in 1 % to 100 %.

• Characteristic2:extended identiﬁcation number of the external volume. This information is

used for identifying volumes in the EVA storage system. For detail about Characteristic2,see “Connecting External Storage Systems” on page 113.

• Cross-subsystem Paths

The following items are displayed:

• Priority: Priority of the cross-subsystem paths. 1 indicates the cross-subsystem path with the

highest priority.

• Port: The port number in the local storage system connecting to the external storage system.

• WWN:Identiﬁcation number of the port in the external storage system.

• Pop-up Menu

Right-click a row in the External Volumes (at the top of the window) to perform the following operations from the pop-up menu.

Using the External Storage GUI

Table8Pop-up Menu in theExternalVolumes (Volume Operation Window)

Pop-up menu

Mapping Path Information

LDEV Information

Delete Volume

Disconnect Volume

Check Paths & Restore Volume

Change Cache Mode

Reference

Section Checking

the External Volume Details on page 83.

Section Deleting

the External Volume Mapping on page

96. Section

Disconnecting an Individual External Volume (Disconnect Volume) on page

90. Section Checking

Connection Status and Resuming External Volume Operation on page

(p. 91). Section Changing

the Cache Mode Setting of the External Volume

on page 93.

Description

Displays the Mapping Path Information dialog box. This dialog box allows you to see the list of the mapping paths set to the selected external volume.

Displays the LDEV Information dialog box. This dialog box allows you to see the emulation type and the capacity of the selected external volume.

Cancels the mapping of the selected external volume.

Disconnects the selected external volume.

Reconnects the selected external volume.

Changes the cache mode set to the selected external volume.

Inﬂow Control

Right-click a row in the Cross-subsystem Paths (atthe bottom of thewindow) to performthe following operations from the pop-up menu.

Table 9 Pop-up Menu in the Cross-subsystem Paths (Volume Operation Window)

Pop-up menu

Conﬁgure Crosssubsystem Paths

Preview Dialog Box

The Preview dialog box allows you to check or cancel the settings that will be applied to the local storage system. To display the Preview dialog box, click Preview in the Volume Operation window, the Path Operation window, or the Port Operation window. This document uses the term the External Storage windows to call these three windows.

The contents displayed in the Preview dialog box are displayed in blue and italics in the list of the External Storage windows. The contents displayed in the Preview dialog box have not been applied to the local storage system, yet. When you click Apply on the External Storage windows, the settings in the Preview dialog box are applied to the local storage system. When the settings are applied, the contents of the

Section Changing

the Inﬂow Control Setting of the External Volume

on page 94.

Reference

Section Conﬁgure

Cross-subsystem Paths Dialog Box

on page 78.

Allows you to select whether to stop writing to the cachememorywhenitis impossibletowrite to the selected external volume.

Description

Displays the Conﬁgure Cross-subsystem Paths dialog box. This dialog box allows you to add and delete cross-subsystem paths, and also change the priority of the selected cross-subsystem path.

XP24000 External Storage Software User’s Guide

Preview dialog box disappear, and the list of the External Storage windows is displayed normally. When you click Cancel on the External Storage windows, all the settings in the Preview dialog box are canceled.

When the settings in the Preview dialog box are not applied to the local storage system even if you click Apply on the External Storage windows, an error message is displayed and the erroneous settings are displayed in blue and italics in the External Storage windows. To see the error detail, click Preview to open the Preview dialog box.

Note:

The identical error codes may be displayed for all the errors listed in the Preview dialog box depending on the type of errors occurred. In this case, check the status of settings and identify the error source.

Figure 25 Preview Dialog Box

The Preview dialog box consists of:

• Preview Area

The items set in the list of the External Storage windows are displayed. The contents displayed in the preset area differ depending on the items set in the list of the External Storage windows. The contents displayed in the preset area are displayed in blue and italics in the list of the External Storage windows.

• Operation Information Area

Theoperation informationonthe settings displayedinthe Previewdialogbox is displayed in the operation information area. Following information is displayed:

• Operation: name of the setting operation.

• Total Number of Objects in Preview: the number of settings displayed in the Preview dialog

box.

• Close button

The Preview dialog box closes, and returns to the External Storage windows.

• Pop-up menu

Right-click a row in the Preview dialog box to perform the following operations from the pop-up menu.

• Error Message: Displays the error message of the selected setting.

• Delete: Cancels the settings selected in the Preview dialog box.

Path Operation Window

th Operation window enables you to stop or resume using cross-subsystem paths. To display the

The Pa

peration window, click Go, External Storage, and then Path Operation on the menu bar of the

Path O Remote Web Console main window.

Using the External Storage GUI

Figure 26 Path Operation Window

The Path Operation window consists of:

• Path Operation Tree (left of the window)

The left p

ane of the window is composed of a tree, and a drop-down list which is used to switch thedisplay of thetree. Thecontentsdisplayed in the list(rightofthe window)switchcorresponding to the items selected in the tree. For details on the tree, see “Path Operation Tree” on page 60.

• Status b

utton (upper right of the window) When you click Status, you can display the cross-subsystem path status in the Status column in the Path Operation list. The Statu

s column does not display any status when you open the Path Operation window, because to display the cross-subsystem path status takes longer than displaying other items in the window.

•To displ

ay the status in the Status column, click Status.

• To update the all items in the window including the Status column, click Status ﬁrst and

make sure the Status button is depressed, then click File and Refresh on the menu bar of the Remote Web Console main window.

• List (r

ight of the window)

ation on the local storage system and external storage system is displayed corresponding to

Inform the items selected in the tree. Thelistcan be sorted by thedisplayed items. Forinstance, if youwantto sort the list in the order o

fportnumbers, click Port on the list.

The items clicked in the tree and the information displayed in the list are as follows:

XP24000 External Storage Software User’s Guide

Table 10 The Items Clicked in the Path Operation Tree and the Contents Displayed

Items selected in the drop-down list

Fibre - Local Subsystem

Fibre - External Subsystem

Items displayed in the tree

(Clicked items are underlined)

Subsystem

+Portnumber

Subsystem

ort number

Product name + WWN

Product name

Contents displayed in the list

List of external ports of the local storage system.

List of cross-subsystem paths which are set to the selected external ports of the local storage system.

The same contents are displayed when you click the WWN in the tree.

List of WWNs of the external storage system.

List of cross-subsystem paths which are set to the selected WWN of the external storage system.

The same contents are displayed when you click the port number in the tree.

Reference

Section Path

Operation List (When Subsystem is Clicked) on page

61 .

Section Path

Operation List (When Port or WWN is Clicked)

on page63.

Section Path

Operation List (When Product Name is Clicked)

on page62.

Section Path

Operation List (When Port or WWN is Clicked)

on page 63.

• Operation (lower left of the window)

The name of the performed setting operation is displayed. You can check the details in the Preview dialog box by clicking the Preview button.

• Preview button (lower right of the window)

When you click Preview, the Preview dialog box is displayed and you can conﬁrm the contents which was set in the list of the Path Operation window. The contents displayed in the Preview dialog box have not been applied to the local storage system, yet. For details on the Preview dialog box, see “Preview Dialog Box” on page 57

• Apply button

Applies the settings in the Preview dialog box to the local storage system. When the settings are applied successfully, they are removed from the Preview dialog box and the settings in blue and italics in the Path Operation window is displayed normally. When the settings are not applied, the error messages are displayed and the settings in blue and italics remain displayed in the Port Operation window. To see the error detail, click Preview to open the Preview dialog box.

• Cancel button

Cancels all the settings in the Preview dialog box.

Path Operation Tree

The Path Operation tree is a tree on the left side of the Path Operation window consisting of a tree and a drop-down list which is used to switch the display of the tree.

The Path Operation tree consists of:

• Drop-down list

A drop-down list to switch the items displayed in the Path Operation tree. You can select which side to display the information on cross-subsystem paths from.

Using the External Storage GUI

• Fibre - Local Subsystem: Displays ports in the local storage system.

• Fibre - External Subsystem: Displays ports (WWNs) in the external storage system.

• Tree

Thefollowing itemsare displayedintreeformat. Thecontentsdisplayed in thelist(rightofthe window) switch corresponding to the items clicked in this tree. For details, see the description of the Path Operation list. When you select Fibre - Local Subsystem from the drop-down list, the following items are displayed in the tree:

• Subsystem: The root node of the Path Operation tree which is always displayed.

• Port number: The port number of the local storage system, which the port attribute is set

to External, is displayed below Subsystem.

When you select Fibre - External Subsystem from the drop-down list, the following items are displayed in the tree:

• Product name of the external volume: The product name of the external storage system which

is connected by External Storage is displayed as a root node. The display format is Vendor name: Product name (Serial number).

• WWN: The WWNs of the external storage system is displayed below the product name of

the external storage system.

• Pop-up menu

The Path Operation tree does not have a pop-up menu that can be displayed.

Path Operation List (When Subsystem is Clicked)

When you cl the local storage system is displayed in the list.

Figure 27 Path Operation List when Subsystem is Clicked

The Path Operation list consists of:

• Port

The foll

• Port: The external port of the local storage system.

• PLI_TOV: The wait time (in seconds) of PLOGI to the external storage system when the switch

• FLI_TOV: The wait time (in seconds) from the switch to FLOGI when the switch is connected.

• Margin: The additional wait time (in seconds) to FLI_TOV (FLOGI wait time) or PLI_TOV (PLOGI

• Status: Status of the cross-subsystem path. The following table shows the displayed statuses.

ick Subsystem in the Path Operation tree, the external port information which is set to

owing items are displayed:

is not co the value.

This va

wait time). This value is automatically set by External Storage. You cannot change the value. As a result, the sum of FLI_TOV time and the margin time, or the sum of PLI_TOV time and the ma

nnected. This value is automatically set by External Storage. You cannot change

lue is automatically set by External Storage. You cannot change the value.

rgin time is set as a total wait time.

XP24000 External Storage Software User’s Guide

Table 11 Status of the Cross-subsystem Path displayed in the Status

Displayed Item

Normal The cross-subsystem path is normal.

Unknown Blockade The cross-subsystem path is blocked.

Disconnect

Warning

Checking

Description

The status of the cross-subsystem path is not retrieved yet. Click Status in the Path Operation window to display the status of the cross-subsystem path.

Thestatusofthe cross-subsystempathisunknown.

Connecting to the external storage system or the external volume is intentionally stopped using the Disconnect Subsystem command or the Disconnect Volume command.

There are cross-subsystempaths whose statusisnot normal. Check thestatus of the cross-subsystem paths.

Theprocessingofchecking the cross-subsystem path statusisin progress.

• Pop-up menu

Right-click a row in the Path Operation list to perform the following operations from the pop-up menu.

Table 12 Pop-up Menu in the Path Operation List (when Subsystem is clicked)

Pop-up menu

Disconnect Paths

Reference

Section Stopping

the Use of Paths to the External Volume (Disconnect Paths) on

page 92.

Description

Allows you to stop the use of the cross-subsystem paths which are connected to the selected external port of the local storage system.

Check Paths

Section Restoring the

Paths to the External Volume (Check Paths)

on page 93.

Allows youtoresumeusing thecross-subsystem paths which are connected to the selected external port of the local storage system.

Path Operation List (When Product Name is Clicked)

When you click a product name in the Path Operation tree, WWN which indicate the port in the external storage system is displayed in the list.

Figure 28 Path Operation List when Product Name is Clicked

The Path Operation list consists of:

• WWN

The following items are displayed:

• WWN: WWN indicating the port in the external storage system that the connection setting is

completed.

• QDepth: The number of Read/Write commands which can be issued (queued) to the external

volume at a time.

• I/O TOV:Value speciﬁed as the time over of the I/O to the external volume.

Using the External Storage GUI

• Path Watch: The time from when the connection of all the cross-subsystem paths to the external

volume have been down to when the external volume is blocked.

•

Status: Status of the cross-subsystem path. For the displayed statuses, see Table 11 on page 62

• Pop-up menu

Right-click a row in the Path Operation list to perform the following operations from the pop-up menu.

Table13Pop-upMenuinthe Path OperationList(when ProductNameisclicked)

Pop-up menu

Disconnect Paths

Check Paths

Change WWN Parameter

Reference

Section Stopping

the Use of Paths to the External Volume (Disconnect Paths) on

page 92. Section Restoring the

Paths to the External Volume (Check Paths)

on page 93. Section Changing

the Port Setting of the External Storage System on page 94.

Description

Allows you to stop the use of the cross-subsystem paths which are connected to the selected external port of the local storage system.

Allows you to restart the use of the cross-subsystem paths which are connected to the selected external port of the local storage system.

Displays the Change WWN Parameter dialog box. This dialog box allows you to change the parameters on the port of the external storage system.

Path Operation List (When Port or WWN is Clicked)

When you click a port or WWN in the Path Operation tree, a cross-subsystem path is displayed in the list.

Figure 29 Path Operation List when Port or WWN is Clicked

The Path Operation list consists of:

• Cross-subsystem Paths

The following items are displayed:

• Port: external port in the local storage system.

• WWN: WWN indicating the target port in the external storage system.

• Vendor: vendor name of the external storage system.

• Product Name: product name of the external storage system.

• Serial Number: serial number of the external storage system.

•

Status: Status of the cross-subsystem path. For the displayed statuses, see Table 11 on page 62

• Pop-up menu

When you click port or WWN in the Path Operation tree, the Path Operation list does not have a pop-up menu that can be displayed.

Port Operation Window

The Port Operation window enables you to check the settings of ports and set the port attributes. To display the Port Operation window, click Go, External Storage, and then Port Operation on the menu bar of the Remote Web Console main window.

XP24000 External Storage Software User’s Guide

Figure 30 Port Operation Window

The Port Operation window consists of:

• Port Oper

ationTree(left of thewindow) The left pane of the window is composed of a tree, and a drop-down list which is used to switch the display of the tree. The contents displayed in the list (right of the window) switch corresponding to the ite

ms selected in the tree. For details on the tree, see “Port Operation Tree”onpage65.

• Port OperationList(rightofthe window)

Information on the port is displayed corresponding to the items selected in the tree. The list can be sorted by the displayed items. For example, if you want to sort the list in the order of port numbers, click Port on the list.

• Operati

on (lower left of the window) The name of the performed setting operation is displayed. You can check the details in the Preview dialog box by clicking the Preview button.

• Previe

w button (lower right of the window) When yo which w

uclick Preview, the Preview dialog box is displayed and you can conﬁrm the contents

as set in the list of the Port Operation window. The contents displayed in the Preview dialog box have not been applied to the local storage system, yet. For details on the Preview dialog box, see “Preview Dialog Box” on page 57

• Apply

button Applies the settings in the Preview dialog box to the local storage system. When the settings are applied successfully, they are removed from the Preview dialog box and the settings in blue and italics in the Port Operation window is displayed normally. When t

he settings are not applied, the error messages are displayed and the settings in blue and italics remain displayed in the Port Operation window. To see the error detail, click Preview to open the Preview dialog box.

• Cance

l button

Cancels all the settings in the Preview dialog box.

Using the External Storage GUI

Port Operation T

The Port Operation tree is a tree on the left side of the Port Operation window consisting of a tree and a drop-down list which is used to switch the display of the tree.

The Port Operat

• Drop-down list

A drop-down list to switch the items displayed in the Port Operation tree. You can select Fibre from the drop-d

• Tree

The ports in the local storage system are displayed in the tree. The contents displayed in the list (right of the window) switch corresponding to the items clicked in this tree. For instance, when you click Exte in the Port Operation list.

• Subsystem: Nothing is displayed in the list when you select Subsystem. Subsystem is selected,

when you disp

• Port attribute: The following attributes are displayed:

• External:When you click External , the ports set to the external port are displayed in the

list. The ex not have the High Speed mode.

• Target:When you click Target ,the portsset as thetargetportare displayedinthe list.

• Initiator:

Access, TrueCopy for Mainframe, Continuous Access Journal, Universal Replicator for Mainframe, and so on) are displayed in the list.

• RCU Target

Continuou Replicator for Mainframe, and so on) are displayed in the list.

• Initiator/External:When you click Initiator/External, the ports for which the

Initiato

• Pop-up menu

The Port Operation tree does not have a pop-up menu that can be displayed.

ree

ion tree consists of:

own list as a PCB type.

rnal in the tree, only the ports that port attributes are set to external are displayed

lay the Port Operation window.

ternal port is the port attribute used for External Storage. The external port does

When you click Initiator, the ports set as the initiator port (used for Continuous

:When you click RCU Target, the ports set as the RCU target port (used for

s Access, TrueCopy for Mainframe, Continuous Access Journal, Universal

r/External MIXmodeisset aredisplayed in thelist.

Port Operation List

When you click the items in the Port Operation tree, the port in the local storage system is displayed in the list. The list can be sorted by the displayed items. For instance, if you want to sort the list in the order of port numbers, click Port on the list.

The Port Operation list consists of:

• Port Information

The following items are displayed:

• Port: Port number. One of the following icons is displayed on the left of each port:

•

: Ports in the Standard mode.

•

: Ports in the High Speed mode.

•

: Ports in the Initiator/External MIX mode.

• Attribute: Port attribute. The external ports are used for connecting to the external storage

system. When you want to set the remote command device, you can use the port for which the Initiator/External MIX mode has been set.

• PCB Mode: The PCB mode of the port is displayed. Standard, High Speed,or MIX (for

Initiator/External MIX mode) is displayed. The external ports do not have the High Speed mode. For detailed information on the PCB mode, see the HP StorageWorks XP24000 LUN Manager User’s Guide. For information on the Initiator/External MIX mode, see “Using Continuous Access orContinuous Access Journalwith Remote Command Device”onpage102.

• Information Area

XP24000 External Storage Software User’s Guide

The total number of ports in the Port Operation list (Total Number of Ports)isdisplayed.

• Pop-up Menu

Right-click a row in the Port Information to perform the following operations from the pop-up menu.

Table 14 Pop-up Menu in the Port Information

Pop-up menu

Change to External

Change to Target

Reference

Section Setting Port

Attribute for Local Storage System on

page 68.

Description

Allows you to change the selected port attribute to external.

Allows you to target.

change the selected port attribute to

Using the External Storage GUI

5 Performing External Storage Operations

External Storage enables you to perform the operation to access the external volume, such as setting the port attribute to the external port, and mapping the external volume as an internal volume.

This chapter describes the procedure of setting external volume using External Storage.

Overview of Setting Operations

The following ﬁgure illustrates the ﬂow chart of the setting operations, which make external volumes usable from a host, by using External Storage.

Figure 31 Operations of Making External Volumes Usable from a Host

The outlined procedure for making the external volumes usable from a host is as follows.

1. Prepare a volume in the external storage system.

2. Set the port and system parameters for the external storage system.

For the procedure, see the documents for your external storage system. Also see “Setting Port of External Storage System” on page 68 and “Connecting External Storage Systems”onpage113.

3. Start Remote Web Console and set the attribute of the port connecting the external

storage system to External in the Port Operation window of External Storage (see “Setting Port Attribute for Local Storage System”onpage68).

XP24000 External Storage Software User’s Guide

4. Map the external volume to the internal volume.

You can map external volumes automatically or manually in the Volume Operation window. For the difference between automatic mapping and manual mapping, see “Difference between Automatic Mapping and Manual Mapping” on page 30.

5. Perform the following operation according to the emulation type that you set for mapping.

• If you select the emulation type of mainframe, you need to format the volume or perform the

Write to Control Blocks operation using Virtual LVI/LUN (VLL). For the procedure to format thevolumeand perform the Write to Control Blocks operation, see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.

• If you select the emulation type of open-system, you need to deﬁne LU paths to a host using

LUN Manager. For the procedure of deﬁning LU paths, see the HP StorageWorks XP24000 LUN Manager User’s Guide.

Setting Por

This secti informati

To set the p

1. Set the to

2. Accordin

3. Set the system parameters.

4. Deﬁne th

tofExternalStorage System

on describes the procedure of setting port of the external storage system. For detailed on, see the documents for the external storage system you use.

ort of the external storage system:

pology information according to the conﬁguration of the connection.

gto the conﬁguration, set the data transfer speed.

See “Connecting External Storage Systems” on page 113 to set the system parameters for the external

storage systems.

eLUN to theport that isset.

Setting Port Attribute for Local Storage System

The attribute of the port used for External Storage needs to be set to the external port.

Note:

If the storage system is partitioned by using Disk/Cache Partition, the ports that can be set as

external ports are only the ports allocated to SLPR 0. To set the port attribute to the external port:

1. Start Remote Web Console, and open the Port Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Right-click the port that you want to set to external port in the Port Operation list.

Apop-upmenuisdisplayed.

Note:

To set multiple ports to external ports at a time, select and right-click all the ports you

want to set.

4. Click Change to External in the pop-up menu.

In the Port Operation list, the attribute of the selected port is changed to External,and therow of the selected port is displayed in blue and italics.

5. Verify the settings in the Preview dialog box (see “Preview Dialog Box”onpage57).

6. Click Apply in thePortOperation window.

The settings are applied to the local storage system and the Port Operation window is displayed normally. When an error occurs, an error message is displayed. Verify the details in the Preview dialog box.

7. Set the topology information according to the conﬁguration of the connection.

When the switch is connected, set the Fabric to Enable. When the switch is not connected, set the Fabric to Disable and set FC-AL. Set the Connection according to the conﬁguration of the actual connection. For detailed information on setting the topology information, see the HP StorageWorks XP24000 LUN Manager User’s Guide.

8. According to the conﬁguration, set the data transfer speed.

For the data transfer speed, select Auto Negotiation setting.

Performing External Storage Operations

Note:

When you connect a TagmaStore AMS storage system or a TagmaStore WMS storage system, use LUN Manager to set the data transfer speed of the external port which you use to a ﬁxed value other than the Auto. Also, setthe datatransferspeed of thetargetportofthe TagmaStore AMS storage system or the TagmaStore WMS storage system to the ﬁxed value according to the data transfer speed of the external port.

Mapping an Ex

After settin map the external volume as an internal volume.

External volumes can be mapped either automatically or manually. This section explain “Mapping an and manual m

Caution:

type is 3380 series except for 3380-3, 3380-3A, 3380-3B, 3380-3C. Before you apply the mapping conﬁguration, make sure the LDKC number which is automatically assigned is 00.

Note:

(for example, RAID Manager) that is using the command device is in progress. If the execution of any applicat

To map the external volume automatically:

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure

3. Right-click one of the following in the Volume Operation tree:

4. Click Ad

5. Conﬁg

6. Clic

7. Verify the settings in the Preview dialog box (see “Preview Dialog Box” on page 57).

8. Click Apply in theVolumeOperation window.

g the attribute of the port used for External Storage to the external port, you are enabled to

s the automatic mapping. For details on manual mapping, see

External Volume Manually” on page 69. For the difference between automatic mapping

apping, see “Difference between Automatic Mapping and Manual Mapping” on page 30.

not specify 01 for the LDKC number when you map a volume of which the emulation

Before you map the external volume, you need to check whether the execution of any application

ion that is using the command device is in progress, stop the application.

that Remote Web Console is in Modify mode.

• Subsystem: Allows you to create a new path group, and add external volumes to the new

path gro

• Path group: Allows you to add external volumes to the existing path group. Apop-up menuis displayed.

dVolume(Auto) in the pop-up menu and click the desired mapping policy in the

submenu.

• When you click the Subsystem in the Volume Operation tree, the Conﬁgure Cross-subsystem

Paths d

• When you click the path group in the Volume Operation tree, the Volume Discovery is

executed and all the external volumes found by the Volume Discovery are displayed in blue and italics in the Volume Operation window. Go to step 7.

“Conﬁ Conﬁg

You are returned to the Volume Operation window. The Volume Discovery is executed, and all the external volumes found by the Volume Discovery are mapped. The settings are displayed in blue

The s

played normally. Whenanerror occurs,anerror message is displayed. Verify thedetails

dis in the Preview dialog box.

ialog box is displayed. Go to step 5.

ure cross-subsystem paths in the Conﬁgure Cross-subsystem Paths dialog box (section

guring Cross-subsystem Path” on page 81).

ure at least two cross-subsystem paths and change the priority if necessary.

k OK to close the Conﬁgure Cross-subsystem Paths dialog box.

and italics.

ettings are applied to the local storage system and the Volume Operation window is

ternal Volume Automatically

up.

Mapping an External Volume Manually

After setting the attribute of the port used for External Storage to the external port, you are enabled to map the external volume as an internal volume. This section explains the manual mapping. For details on automatic mapping, see “Mapping an External Volume Automatically” on page 69.

XP24000 External Storage Software User’s Guide

Caution:

Do not specify 01 for the LDKC number when you map a volume of which the emulation type

is 3380 series except for 3380-3, 3380-3A, 3380-3B, 3380-3C.

Note:

Before you map the external volume, you need to check whether the execution of any application (for example, RAID Manager) that is using the command device is in progress. If the execution of any application that is using the command device is in progress, stop the application.

To map the external volume manually:

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Right-click one of the following in the Volume Operation tree:

• Subsystem: Allows you to create a new path group, and add external volumes to the new

path group

• Path group: Allows you to add external volumes to the existing path group. Apop-upmenuisdisplayed.

4. Click Add Volume (Manual) in the pop-up menu and click the desired mapping policy in the

submenu.

• When you click the Subsystem in the Volume Operation tree, the Conﬁgure Cross-subsystem

Paths dialog box is displayed. Go to step 5.

• When you click the path group in the Volume Operation tree, the Volume Discovery is

executed and the Add Volume dialog box is displayed. Go to step 7.

5. Conﬁgure cross-subsystem paths in the Conﬁgure Cross-subsystem Paths dialog box (section

“Conﬁguring Cross-subsystem Path” on page 81). Conﬁgure at least two cross-subsystem paths and change the priority if necessary.

6. Click OK to close the Conﬁgure Cross-subsystem Paths dialog box.

The Volume Discovery is executed and all the external volumes found by the Volume Discovery are displayed in the Add Volume dialog box. The Add Volume dialog box displays a list of all the external volumes which can be mapped to the local storage system. To map these volumes, you need to set the external volume parameter or the LDEV number as explained in the following steps.

7. In the Add Volume dialog box (section “Add Volume Dialog Box” on page 71), right-click

theexternalvolumethat you want to map. Apop-upmenuisdisplayed.

Note:

You can select multiple external volumes to make the same settings to them at a time. When you map LDEVs, you can select the multiple external volumes which have the same emulation type.

8. Click the each following command in the pop-up menu and make the settings in the displayed

dialog box. Execute the operations in the following order (a and then b).

a. The Set External Volume Parameter command (section

“Set External Volume Parameter Dialog Box” on page 72) : Allows you to conﬁgure the external volume parameters. After you conﬁgure parameters, click OK to close the displayed dialog box.

b. You need to conﬁgure the LDKC:CU:LDEV number to the LDEVs in the external volume. After

you conﬁgure the number, click OK to close the displayed dialog box. The LDEV Mapping (Auto) command (section “LDEV Mapping(Auto)DialogBox”onpage74) : Allows you to specify the LDEV number to the ﬁrst LDEV in the external volume. The rest of LDEVs are automatically allocated to the subsequent LDEV number. For the example of operation, see “Example: How to Map LDEVs Automatically”onpage77. The LDEV Mapping (Manual) command (section “LDEV Mapping (Manual) Dialog Box” on page 75) : Allows you to specify the LDEV number to all the LDEVs in the external volume. For the example of operation, see “Example: How to Map LDEVs Manually” on page 77. Both commands allow you to specify the interval between LDEV numbers.

When you close the displayed dialog box, the Add Volume dialog box is displayed.

9. In the Add Volume dialog box, make the settings to all the volumes you want to map (repeat

step 7 and step 8).

Performing External Storage Operations

Note:

Delete the external volume that you do not want to map in the Add Volume dialog box. To

delete the external volume, right-click the external volume and click Delete in the pop-up menu.

10. Click OK to closethe AddVolumedialogbox.

•

When the SSID setting is required, the SSID dialog box (section “SSID Dialog Box” on page 76) is displayed. Go to step 11 .

• When the SSID setting is not required, the Volume Operation window is displayed. Go

to step 15 .

11 . In the SSID dialog box, right-click an LDEV for which SSID is not speciﬁed, and then click SSID

in the pop-up menu. The Set SSID dialog box is displayed.

12. In the Set SSID dialog box, select a value from the SSID drop-down list and click OK.

The selected value is displayed in the SSID dialog box.

13. In the SSID dialog box, make the settings to all the LDEVs that you need to set SSID to (repeat

step 11 and step 12 ).

14. Click OK to close the SSID dialog box.

You are returned to the Volume Operation window. The settings are displayed in blue and italics.

15. Verify the settings in the Preview dialog box (see “Preview Dialog Box” on page 57).

16. Click Apply in theVolumeOperation window.

The settings are applied to the local storage system and the Volume Operation window is displayed normally. When an error occurs, an error message is displayed. Verify the details in the Preview dialog box.

Add Volume Dialog Box

The Add Vol conﬁgure when you click the Add Volume (Manual) command in theVolumeOperation window.

The Add Volume dialog box displays the list of the external volumes which can be mapped to the local storage system. To map the external volume, you need to conﬁgure the external volume parameter and the LDEV number. The parameter which you have not conﬁgured is displayed with a hyphen (-) . To conﬁgure such parameter, click the external volume having the parameter which you have not conﬁgured, and open the other dialog boxes from the Add Volume dialog box. Delete the external volume if the Add Volume

Figure 32 Add Volume Dialog Box

ume dialog box allows you to view the external volume parameter or LDEV number which are

d to the LDEVs in the external volume. The Add Volume dialog box is automatically displayed

dialog box contains the external volume that you do not want to map.

The Add Volume dialog box consists of:

•

List (for more information, see “Volume Operation List (When Path Group is Clicked)” on page 54)

• Characteristic1: identiﬁcation number of the external volume.

• ExG: external volume group number and its reference number.

XP24000 External Storage Software User’s Guide

• Emulation Type: emulation type of the external volume that you conﬁgured when you mapped

the external volume.

• LDEV: LDKC:CU:LDEV number which is assigned to the external volume.

• Number of LDEVs: number of LDEVs which are actually created in the external volume.

• SLPR/CLPR: SLPR, and CLPR which is used to access the external volume. This is displayed

when the cache memory is partitioned using Disk/Cache Partition.

• Cache Mode: displays whether the write data from the host to the external storage system is

propagated synchronously (Disable) or asynchronously (Enable).

• Inﬂow Control: displays if the writing operation to the cache memory is stopped (Enable)or

continued (Disable) when the writing operation to the external volume is impossible.

• Path Mode: indicates how the cross-subsystem paths work.

• Device: product name that is reported to the host by the external volume.

• Ext. VOL Info: information about the external volume.

• Capacity (blocks): capacity of the external volume in Blocks.

• Characteristic2: extended identiﬁcation number of the external volume.

• OK button

Saves the settings and closes the dialog box.

• Cancel button

Cancels the settings and closes the dialog box.

• Pop-up Menu

Right-click a row in the Add Volume dialog box to perform the following operations from the pop-up menu.

Table15Pop-upMenuintheAddVolumedialogbox

Pop-up menu

Set Extern Paramete

LDEV Mapping (Auto)

LDEV Mapping (Manual)

Delete

al Volume

Reference

Section Se

Volume Par Dialog Bo

72. Section LDEV

Mapping (Auto) Dialog Box on

page 74. Section LDEV

Mapping (Manual) Dialog Box.on

page 75

N/A

tExternal

ameter

x on page

Description

Displays t This dial

Displays the LDEV Mapping (Auto) dialog box. This dialog box allows you to specify the LDEV number to the ﬁrst LDEV in the external volume.

Displays the LDEV Mapping (Manual) dialog box. This dialog box allows you to specify the LDEV number to all the LDEVs in the external volume.

Allows Volume

Set External Volume Parameter Dialog Box

The Set External Volume Parameter dialog box allows you to set the external volume parameter. The Set External Volume Parameter dialog box is displayed when you right-click the external volume in the Add Volume dialog box and click the Set External Volume Parameter in the pop-up menu.

he Set External Volume Parameter dialog box.

og box allows you to set the parameters.

you to delete the external volume from the Add

dialog box.

Performing External Storage Operations

Figure 33 Set External Volume Parameter Dialog Box

The Set External Volume Parameter dialog box consists of:

• ExG (1 -163 84 )

Group numbe numbers fro

r of the connected external volume. You need to specify the number using decimal

m1to 16384. E displayed outside of the text box is the capital letter of the external

volume group.

• Emulation Type

You can sel

ect the emulation type of the mapped external volume from the drop-down list. To map the external volume as an open system volume, you need to ﬁrst decide the emulation type for the mapped volume, OPEN-V or other than OPEN-V. To map the external volume as an open system vol

ume with the emulation type other than OPEN-V, select the Except OPEN-V check box.

•As you clear the Except OPEN-V check box, OPEN-V and available mainframe emulation

types are displayed in the drop-down list.

•As you sel

ect the Except OPEN-V check box, the emulation types for the open system other

than OPEN-V are also displayed in the drop-down list.

• Number of LDEVs

You can se

lect the maximum number of LDEVs which can be created in the external volume when you map the external volume. The number of LDEVs that can be created in the external volume is different corresponding to the capacity supported by the emulation type speciﬁed in the Emulation Type. The number of LDEVs which are actually created in the external volume is displayed in the Numb

er of LDEVs column in the Add Volume dialog box after you set this parameter in the

Set External Volume Parameter dialog box.

• Cache mode

Cache mo

de speciﬁes if the write I/O from the host is propagated synchronously (Disable)or

asynchronously (Enable)tothe External Storagedevice.

Caution:

If you set Disable, the bind mode of Cache Residency Manager cannot be set.

• Inﬂow Control

Inﬂow Co

ntrol speciﬁes if the writing operation to the cache memory is stopped (Enable)or

continued (Disable) when the writing operation to the external volume is impossible.

• CLPR

When th for acc that se emula

e cache memory is partitioned using Disk/Cache Partition, you can select CLPR used

essing to the mapped external volume from the drop-down list. The number of SLPR

lected CLPR belongs is displayed at the right of the drop-down list. However, when the

tion type for the mainframe is selected in Emulation Type, you can only select CLPR that

belongs to SLPR number 0.

• OK button

the settings and closes the dialog box.

Saves

• Cancel button

Cancels the settings and closes the dialog box.

XP24000 External Storage Software User’s Guide

LDEV Mapping (Au

to) Dialog Box

The LDEV Mappin the external vo are automatically assigned for the rest of LDEVs.

g (Auto) dialog box allows you to specify the LDEV number only to the ﬁrst LDEV in

lume. If you specify the LDEV number to the ﬁrstLDEV, thesubsequentLDEVnumbers

Figure 34 LDEV Mapping (Auto) Dialog Box

The LDEV Mapping (Auto) dialog box consists of:

• SLPR Limited

To restrict the CU in the CU drop-downlisttothe CU whichbelongs to theSLPR, select the Limited. To display all the CU in the CU drop-down list without any restriction, select the Unlimited.By default, the Limited is selected.

• LDKC drop-down list

You can select the LDKC number of the local storage system to which you want to map the external volume.

• CU drop-down list

You can select the CU number of the local storage system to which you want to map the external volume. When you select Limited in the SLPR Limited, the selection range is limited to CU which belongs to the SLPR.

• Interval drop-down list

You can select the interval of the LDKC:CU:LDEV number for mapping each volume. The LDEV number is settoeachLDEVwiththe interval that youspeciﬁed in this drop-down list.

• LDEV Map

LDEV map allows you to allocate the LDEV number to each LDEV by clicking cells in a table. Each cell in the LDEV map represents an internal volume. In the LDEV map, the horizontal scale indicates tens place digit of the LDEV number, and the vertical scale indicates ones place digit of

Performing External Storage Operations

the LDEV number. Select a cell for the internal volume on the LDEV map, the selected cell turns to blue, and the LDEV number which the cell indicates is deﬁned to the LDEV. The deﬁned internal volume is grayed out, and undeﬁned internal volumes to be mapped are displayed in white.

• OK button

Saves the settings and closes the dialog box.

• Cancel button

Cancels the settings and closes the dialog box.

• Pop-up menu

This dialog box does not have a pop-up menu that can be displayed.

LDEV Mapping (Manual) Dialog Box

The LDEV Mapping (Manual) dialog box allows you to specify the LDEV number to all the LDEVs in the external volume.

Figure 35 LDEV Mapping (Manual) Dialog Box

The LDEV Mapping (Manual) dialog box consists of:

• List

• ExG

The external volume group number of the connected external volume, which you speciﬁed in the Set External Volume Parameter dialog box, is displayed.

• LDKC:CU:LDEV

You use the LDKC:CU:LDEV with the LDEV map for assigning the LDEV number. You can either map an LDEV number to each LDEV one by one, or map a numbers to multiple LDEVs at once. The LDKC:CU:LDEV shows the LDKC numbers, CU numbers, and LDEV numbers of the external volumesmappedasinternalvolumes. A hyphen (-) indicates that the external volumes are not mapped as internal volumes. To assign an LDEV number to an LDEV, select one or more external volume whose LDEV number is a hyphen (-) in the LDKC:CU:LDEV, and select one cell in the LDEV map.

XP24000 External Storage Software User’s Guide

When you select two or more external volumes in the LDKC:CU:LDEV, the other cells are automatically added to match the number of external volumes that you previously selected in the LDKC:CU:LDEV.When Interval is set, mapping is performed in intervals of that number.

• Pop-up menu

This dialog box does not have a pop-up menu that can be displayed.

Other items are same as the LDEV Mapping (Auto) dialog box. For details, see “LDEV Mapping(Auto)DialogBox”onpage74.

SSID Dialog Box

The SSID dialo assigns a SSI SSID, you need to assign one using the SSID dialog box. The SSID dialog box is displayed during the mapping operation when the SSID setting is required.

Figure 36 SSID Dialog Box

The SSID dialog box consists of:

g box allows you to set the SSID to the LDEVs in the external volume. The storage system

D which identiﬁes each group of LDEV number. If the LDEVs that you created do not have

• SLPR drop-down list

When the storage system is partitioned using Disk/Cache Partition, use the SLPR drop-down list. If you select the SLPR Limited check box and select the SLPR number in the SLPR drop-down list, only the SSIDs that can be used for the selected SLPR can be set in the Set SSID dialog box. If you do not select the SLPR Limited check box, you can set the SSID from all the unused SSIDs regardless of the selected SLPR number.

• List

• LDEV Boundary

The range of LDEVs in the selected external volume is displayed.

• SSID

The SSIDs allocated to each LDEV are displayed. If SSID is not set, a hyphen (-) is displayed.

• OK button

Saves the settings and closes the dialog box.

• Cancel button

Cancels the settings and closes the dialog box.

• Pop-up Menu

Right-click a row in the SSID column to execute the Set SSID command in the pop-up menu. The

Set SSID command allows you to set the SSID to the selected LDEV. When you click the Set SSID, the following dialog box is displayed.

Performing External Storage Operations

Figure 37 Set SSID Dialog Box

SSID (0004–FFFE):Selectthe SSID from theSSIDdrop-down list. You canselect the valuefor an SSID from 0x0004 to 0xFFFE.

• If you have selected the SLPR Limited check box on the SSID dialog box, only the SSIDs that

can be used in SLPR selected on the SSID dialog box are displayed in the drop-down list.

• If you have not selected the SLPR Limited check box on the SSID dialog box, all of the unused

SSIDs are displayed in the drop-down list regardless of the selected SLPR.

Example: How to Map LDEVs Automatically

For instance, you map two external volumes which have the same emulation type, and create two LDEVs in each external volume.

To assign the number which starts 00:01:01 with 255 intervals to total four LDEVs that you created:

1. Select the two external volumes and right-click them in the Add Volume dialog box, and then

click the LDEV Mapping (Auto) in the pop-up menu. The LDEV Mapping (Auto) dialog box is displayed.

2. Conﬁgure the starting LDEV number and interval as follows:

•LDKC: 00

•CU: 01

•Interval: 255

• LDEV map: Select the cell in the row 1 and column 00.

3. Click OK.

LDEV numbers are automatically assigned as follows:

•the ﬁrst LDEV: 00:01:01

• the second LDEV: 00:02:01

• the third LDEV: 00:03:01

• the fourth LDEV: 00:04:01 However, the Add Volume dialog box displays only the LDEV number assigned for the ﬁrst

LDEV of each external volume. In this case, 00:01:01... and 00:03:01... are displayed in the Add Volume dialog box.

Example: How to Map LDEVs Manually

For instance, you map two external volumes which have the same emulation type, and create two LDEVs in each external volume.

To assign the desired number to total four LDEVs that you created:

1. Select the two external volumes and right-click them in the Add Volume dialog box, and then

click the LDEV Mapping (Manual) in the pop-up menu. The LDEV Mapping (Manual) dialog box is displayed.

2. Click the LDEV to which you want to assign an LDEV number in the LDKC:CU:LDEV column on the

left of the LDEV Mapping (Manual) dialog box.

3. Select the desired LDKC number and the desired CU number to the speciﬁed LDEV from the

drop-downlistonthe rightofthe LDEV Mapping(Manual)dialogbox.

4. Click the cell of the desired LDEV number in the LDEV map on the right of the LDEV Mapping

(Manual) dialog box (see Figure 38 on page 78). The selected cell turns blue and the assigned LDEV number is displayed in the LDKC:CU:LDEV column.

XP24000 External Storage Software User’s Guide

5. Make the settings to all the LDEVs in the LDKC:CU:LDEV column (repeat step 2 through step 4).

6. Click OK.

The speciﬁed numbers are assigned to the LDEVs. However, the Add Volume dialog box displays only the LDEV number assigned for the ﬁ rst LDEV of each external volume.

Figure 38 Example of LDEV Mapping (Manual) Dialog Box

Note:

You can also assign contiguous LDEV numbers to LDEVs using this dialog box. To assign contiguous LDEV numbers to LDEVs, select multiple LDEVs at step 2, and specify the starting LDEV number at step 3 and 4.You can set Interval if necessary.

Settin

g the Cross-subsystem Paths

You nee using the external volume mapped as an internal volume. For details on the cross-subsystem path, see “Cross-subsystem Paths”onpage23.

You can conﬁgure the cross-subsystem path when you map the external volume as the internal volume. You can also add or change the cross-subsystem paths after the mapping operation is completed. To conﬁgure the cross-subsystem paths, use the Conﬁgure Cross-subsystem Paths dialog box.

dtoconﬁgure the cross-subsystem path from the internal volume to the external volume before

Conﬁgure Cross-subsystem Paths Dialog Box

The Conﬁgure Cross-subsystem Paths dialog box allows you to conﬁgure cross-subsystem paths. This dialog box is automatically displayed when you add a volume to a new path group using the Add Volume (Auto) command or the Add Volume (Manual) command. You can also open this dialog box by clicking the Conﬁgure Cross-subsystem Paths command in the Volume Operation window.

Performing External Storage Operations

You can change the priority, add and delete the cross-subsystem path in the Conﬁgure Cross-subsystem Paths dialog box.

The Volume Operation window displays only the external storage system which you have conﬁgured the mapping. However, the Conﬁgure Cross-subsystem Paths dialog box displays all the external storage system connected to the local storage system even without the mapping conﬁguration. To update the dialog box, click the Port Discovery button in the upper right of the dialog box.

Figure 39 Conﬁgure Cross-subsystem Paths Dialog Box

The Conﬁgure Cross-subsystem Paths dialog box consists of:

• Available Paths (Upper part of the dialog box)

The following three panes are displayed from the left,

•The left

pane displays the external storage systems connected to the local storage system.

• Vendor: vendor name.

• Product Name:product name.

• Serial

Number: serial number of the product.

• The middle pane displays external ports of the local storage system, which connects to the

external storage system that you clicked in the left pane. One of the following icons is displayed for each port:

• Port: external port of the local storage system.

•The r

ight pane displays WWN of the external storage system that the port attribute is set to Target. The WWN which connects to the port that you clicked in the middle pane is displayed outofthe WWN ofthe external storagesystem which youclicked in theleftpane.

• WWN:Identiﬁcation number of the port in the external storage system.

tDiscovery button (Upper right of the dialog box)

• Por

ows you to update information displayed in the Available Paths or display the information on

All all the external storage system connected to the local storage system even without the mapping conﬁguration. When you click Port Discovery, the Port Discovery dialog box is displayed.

XP24000 External Storage Software User’s Guide

Figure 40 Port Discovery Dialog Box

The Port Discovery dialog box displays the list of the external ports in the local storage system. When you click the external port in the list, WWNs of the external storage system connected to the clicked external port are searched for, and that the Available Paths in the Conﬁgure Cross-sub

system Paths dialog box is updated.

• Selected Paths (Lower part of the dialog box)

The cross-subsystem paths that you have added in the Available Paths are displayed.

• Priority:

Priority of the cross-subsystem paths connecting to the external volume. 1 indicates

thepathwiththe highestpriority.

• Port: Port of the local storage system that the port attribute is set to External.

• WWN:WWN o

f the external storage system that the port attribute is set to Target.

• OK button

Saves the settings and closes the dialog box.

• Cancel bu

tton

Cancels the settings and closes the dialog box.

• Pop-up Menu

ick a row in the Conﬁgure Cross-subsystem Paths dialog box to perform the following

Right-cl operati

ons from the pop-up menu.

Table 16 Pop-up Menu in the Conﬁgure Cross-subsystem Paths dialog box

licked Area

Right-c

WWN in the Available Paths

ed Paths

Select

Performing External Storage Operations

Pop-up menu

Add

Delete

Raise Priority

Lower Priority

Reference

Section Conﬁguring

Cross-subsystem Path

on page81. Section Canceling

the Cross-subsystem Path Conﬁguration on

page 83. Section Changing

the Conﬁgured Cross-subsystem Path Priority on page 82.

Descrip

Allows you to add cross-subsystem paths.

Allows you to delete the selected cross-subsystem path.

Allows you to raise the priority of the selected cross-subsystem path.

Allows you to lower the priority of the selected cross-subsystem path.

tion

Conﬁguring Cros

s-subsystem Path

You can conﬁgur section explains the procedure to add a cross-subsystem path to an existing path group. To create a new path group and conﬁgure cross-subsystem paths, you need to operate the mapping operation. For the procedure, see “Mapping an External Volume Automatically” on page 69.

To add the cross

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Click the path

4. Right-click the cross-subsystem path in Cross-subsystem Paths in theVolumeOperation list.

Apop-up menuis displayed.

5. Click Conﬁgu

The Conﬁgure “Conﬁgure Cr

6. In the Avail

WWN (see Figure 41 on page 82).

• External storage system: Click the external storage system.

• Port:Clic

cross-subsystem path.

• WWN: Click the WWN of the external storage system which is the ending point of the

cross-sub

Note:

in the dialog box, you can update the information by clicking the Port Discovery button, selecting the port which connects to the WWN, and then clicking OK. Apop-up m

7. Click Add in the pop-up menu.

The cross-subsystem path is added to the Selected Paths with the selected information. Conﬁgure more than two cross-subsystem paths for one path group. Change the priority or delete unnecessary cross-subsystem paths if necessary.

8. Click OK

You are returned to the Volume Operation window. The settings are displayed in blue and italics.

9. Verify the settings in the Preview dialog box (see “Preview Dialog Box” on page 57).

10. Click Apply in theVolumeOperation window.

The sett displa in the Preview dialog box.

e the cross-subsystem path using the Conﬁgure Cross-subsystem Paths dialog box. This

-subsystem path to an existing path group:

group that you want to add a cross-subsystem path in the Volume Operation tree.

re Cross-subsystem Paths in the pop-up menu.

Cross-subsystem Paths dialog box is displayed (see

oss-subsystem Paths Dialog Box”onpage78).

able Paths, click the following three items, and then right-click the WWN in the

k the external port of the local storage system which is the starting point of the

system path.

When the external storage system or the WWN that you want to choose is not displayed

enu is displayed.

to close the Conﬁgure Cross-subsystem Paths dialog box.

ings are applied to the local storage system and the Volume Operation window is

yed normally. When an error occurs, an error message is displayed. Verify the details

XP24000 External Storage Software User’s Guide

Figure 41 Pop-up Menu of Conﬁgure Cross-subsystem Paths Dialog Box

Changing the Conﬁgured Cross-subsystem Path Priority

To change command d

The follo raising

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Click t

4. Right-click the cross-subsystem path in Cross-subsystem Paths in the Volume Operation list.

5. Click C

6. Right

7. Click Raise Priority in the pop-up menu

8. Repeat the operation of the Raise Priority command until the row of the selected path is

9. Click OK to close the Conﬁgure Cross-subsystem Paths dialog box.

10. Veri 11 . Click Apply in theVolumeOperation window.

the cross-subsystem path priority, use the Raise Priority command and the Lower Priority

isplayed in the Conﬁgure Cross-subsystem Paths dialog box.

wing is an example of procedure to make the cross-subsystem path to the currently used path by

the priority of the cross-subsystem path:

he path group to which the cross-subsystem path belongs in the Volume Operation tree.

Apop-upmenuisdisplayed.

onﬁgure Cross-subsystem Paths in the pop-up menu.

The Con “Conﬁg

in the Apop-upmenuisdisplayed.

The ro

displayed in the head of the Selected Paths list and its Priority column changes to 1. When t used one (primary path).

You a

The settings are applied to the local storage system and the Volume Operation window is displayed normally. When an error occurs, an error message is displayed. Verify the details in t

ﬁgure Cross-subsystem Paths dialog box is displayed (see

ure Cross-subsystem Paths Dialog Box” on page 78).

-click the cross-subsystem path that you want to change the priority of in the Selected Paths Conﬁgure Cross-subsystem Paths dialog box.

w of the selected path switches with the one row above.

he Priority column changes to 1, it means the cross-subsystem path is set as the usually

re returned to the Volume Operation window. The settings are displayed in blue and italics.

fy the settings in the Preview dialog box (see “Preview Dialog Box”onpage57).

he Preview dialog box.

Performing External Storage Operations

Canceling the Cr

oss-subsystem Path Conﬁguration

You can cancel t dialog box.

To cancel the cross-subsystem path conﬁguration:

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that R

3. Click the path group to which the cross-subsystem path belongs in the Volume Operation tree.

4. Right-click the cross-subsystem path in Cross-subsystem Paths in theVolumeOperation list.

Apop-up menui

5. Click Conﬁgure Cross-subsystem Paths in the pop-up menu.

The Conﬁgure Cross-subsystem Paths dialog box is displayed (see “Conﬁgure Cross-subsystem Paths Dialog Box”onpage78).

6. Right-click the cross-subsystem path that you want to cancel the conﬁguration in the Selected

Paths in the Conﬁgure Cross-subsystem Paths dialog box.

Apop-up menuis displayed.

7. Click Delet

The conﬁguration of the selected cross-subsystem path is canceled, and the cross-subsystem path is deleted from the Cross-subsystem Paths.

8. Click OK to close the Conﬁgure Cross-subsystem Paths dialog box.

You are retu

9. Verify the

10. Click Apply in theVolumeOperation window.

The settings are applied to the local storage system and the Volume Operation window is displayed normally. When an error occurs, an error message is displayed. Verify the details in the Prev

he conﬁguration of the cross-subsystem path using the Conﬁgure Cross-subsystem Paths

emote Web Console is in Modify mode.

sdisplayed.

e in the pop-up menu

rned to the Volume Operation window. The settings are displayed in blue and italics.

settings in the Preview dialog box (see “Preview Dialog Box” on page 57).

iew dialog box.

Changing the Cross-subsystem Path

To change the cross-subsystem path, cancel the current cross-subsystem path, and conﬁgure another cross-subsystem path as a new cross-subsystem path. For how to cancel the current cross-subsystem path, see “Canceling the Cross-subsystem Path Conﬁguration” on page 83 For how to conﬁgure an cross-subsystem path, see “Conﬁguring Cross-subsystem Path”onpage81.

Checkin

g the External Volume Details

You can c the deta

To check the external volume details:

1. Start Remote Web Console, and open the Volume Operation window.

2. Click t

3. Right-click the external volume that you want to check in the Volume Operation list.

4. Click t

5. Verify the details in the displayed dialog box.

6. Clic

heck the details on the mapped external volume using the LDEV Information dialog box, and

ils on the mapping path using the Mapping Path Information dialog box.

he path group in the Volume Operation tree.

Apop-up menuis displayed.

he following command in the pop-up menu.

• LDEV information: Displays the LDEV Information dialog box (section

“LDEV Information Dialog Box”onpage84).

• Mapping Path Information: Displays the Mapping Path Information dialog box (section

“Mapping Path Information Dialog Box”onpage84).

k Close to close the displayed dialog box.

You are returned to the Volume Operation window.

XP24000 External Storage Software User’s Guide

LDEV Information Dialog Box

The LDEV Information dialog box displays the information on the LDEVs created in the external volumes. Each row displays one LDEV information.

Figure 42 LDEV Information Dialog Box

The LDEV Information dialog box consists of:

• List

• LDKC:CU:LDEV: The LDKC:CU:LDEV number of the LDEVs created in the external volume.

• Emulation Type: The emulation type of the external volume set when it was mapped.

• Capacity: Capacity of the external volume is displayed. When the emulation type of the

mapped external volume is for the open system, the capacity is displayed in Blocks. When the emulation type of the mapped external volume is for the mainframe system, the capacity is displayed in Cylinder.

• Close button

Closes the LDEV Information dialog box.

• Pop-up menu

The LDEV Information dialog box does not have a pop-up menu that can be displayed.

Mapping Path Information Dialog Box

The Mapping Path Information dialog box displays the information on the mapping paths which connect the inter

nal volume and the external volume.

Performing External Storage Operations

Figure 43 Mapping Path Information Dialog Box

The Mapping Path Information dialog box consists of:

• List

• Priority: Priority of the mapping path. 1 indicates the mapping path with the highest priority.

• Port: The port number in the local storage system connecting to the external storage system.

• WWN:Identiﬁcation number of the port in the external storage system.

• LUN: LU number set to the external volume.

• Status: Status of the mapping path. One of the following statuses is displayed. For how to

react to the displayed status, see “Troubleshooting for External Storage” on page 107.

XP24000 External Storage Software User’s Guide

Table 17 Status of the Mapping Paths in the Mapping Path Information Dialog Box

Displayed Item

Normal The mapping path is normal.

Unknown Blockade The mapping path is blocked.

External device setting changed

LDEV size reduced

Not ready Illegal request Thereply of theexternalstorage system was ILLEGALREQUEST. Command aborted Busy LDEV reserved The external storage system is in the Reserve status.

Response error

Initiator port

Description

The status of the mapping path is not retrieved yet. Click Status in the Volume Operation window to display the status of the mapping path.

The statusofthe mappingpathisunknown.

The setting of the external storage system has been changed. For example, the path deﬁnition was deleted, or the external storage system itself was replaced by another device.

Thesetting of thevolumecapacityofthe external storagesystemhas been changed (the volume capacity was reduced).

The reply of the external storage system was NOTREADY.

Thereply of theexternalstorage system was ABORTEDCOMMAND. The external storage system is in the BUSY status.

The external storage system is in the blocked status caused by the abnormal reply (Response).

The port attribute of the external storage system has been changed to the initiator port.

Unknown port

Cannot detect port

Internal error The program error occurred. Or there is a logical contradiction.

Timeout

Standby

Target error

Checking

Disconnect

Unavailable

Backoff

The port attribute of the external storage system is unknown. The path has been removed or the port of the external storage system cannot

be found.

The processing was retried because the abnormal reply (Response) was returned, however, the processing has been stopped by timeout.

The port of the external storage system is standing by. The port status is normal but cannot receive I/O.

Port failures, such as controller blockade are detected on the external storage system side.

The processing of checking the mapping path status is in progress. Connecting to the external storage system or the external volume is intentionally

stopped using the Disconnect Subsystem command or the Disconnect Volume command.

The reply of the external storage system was Unavailable. The external storage system demands to change the connected port. Once the status becomes Unavailable, the primary path is changed to the alternate path that is in the Standby status. When the primary path has been changed, the status of the path becomes Normal.

The reply of the external storage system was Backoff. The status of the path is waiting for recovery because a temporary error has occurred in the volume of the external storage system. Even if the status of the primary path becomes this status, the primary path is not changed to the alternate path immediately. After the error recovery, the status becomes Normal. If the status cannot be recovered from the error, the path status is changed to the other status.

Performing External Storage Operations

• Close button

Close the Mapping Path Information dialog box.

• Pop-up menu

The Mapping Path Information dialog box does not have a pop-up menu that can be displayed.

Turning On or Of

This section de system after th

This section e

• Turning on or off the power supply of only external storage system (see

“Turning On or Off Only the External Storage System” on page 88).

• Turning on or off the power supply of only local storage system (see

“Turning On or Off Only the Local Storage System” on page 88).

• Turning on or

“Turning On This section explains taking the case where Business Copy is used as an example.

When you turn on or off the power supply of only external storage system, you need to execute the External Storage commands. For details on these commands, see “Commands for Turning On or Off Only the External Storage System” on page 87.

Caution:

ﬁrst need turn off the local storage system, and then turn off the external storage system.

Caution:

ﬁrst need t

e External Storage operation has been started.

xplainsasfollows:

When you want to turn off both the local storage system and the external storage system, you

hen you want to turn on both the local storage system and the external storage system, you

oturnonthe external storagesystem, andthenturnonthe localstorage system.

f the Storage System

scribes the procedure to turn on or off the local storage system and the external storage

offthe powersupplyofbothstorage systems(see

or Off Both Storage Systems”onpage89).

Commands for Turning On or Off Only the External Storage System

When you turn on or off the power supply of only external storage system while the power supply of the local storage system keeps on, you need to execute the following External Storage commands.

Thecommandsusedfor theprocedure areasfollows:

• Disconnect Subsystem command

The Disconnect Subsystem command should be executed when the external storage system is maintained or stopped on purpose. When the Disconnect Subsystem command is executed, the acceptance of the host I/O to the external volume that is mapped as the internal volume is stopped. Then all the data that should belong to the external volume is written to the external volume from the cache memory of the local storage system (all the data is destaged). For the procedure to execute the Disconnect Subsystem command, see “Disconnecting External Storage System or Disconnecting External Volume” on page 89.

Note:

When you want to perform the same processing of the Disconnect Subsystem command on individual volume, you can use the Disconnect Volume command. To delete the external volume mapping individually, you ﬁrst need to execute the Disconnect Volume command and then the Delete Volume command. For the procedure to delete the external volume mapping, see “Deleting the External Volume Mapping” on page 96.

• Check Paths & Restore Volume command

The Check Paths & Restore Volume command checks if the deﬁned information about the mapped external volume and the actual external volume status match. If the external volume can be used as the mapped volume as the result of the check, the external volume is set to accept the I/Os, and you can continue using the external volume as a mapped volume. The Check Paths & Restore Volume command can be used to restore the external volume, which is set to reject the host I/O by the Disconnect Subsystem command or the Disconnect Volume command, as the mapped volume. The Check Paths & Restore Volume command can be executed for both the whole storage system and for the individual volume. If an error occurs in the path, ﬁ rstly remove the error in the path to make the path restorable, and then execute the Check Paths & Restore Volume command.

XP24000 External Storage Software User’s Guide

For the procedure to execute the Check Paths & Restore Volume command, see “Checking Connection Status and Resuming External Volume Operation” on page 91.

Note:

When the Check Paths & Restore Volume command is executed and the external volume is ready to be restored as the mapped volume, the external volume is set to accept the I/Os and you can resume using the external volume as a mapped volume. However, if the external volume is not ready to be restored, the external volume status remains blocked.

Turning On or Off Only the External Storage System

• To turn off the

1. Stop the read

internal vol

2. Execute the

to turn off. The additional I/O to the external volume is stopped and all the data in the local cache memory is written in the external volume (all the data is destaged). For the proc “Disconnecting External Storage System or Disconnecting External Volume” on page 89.

3. Perform other operations that are required before turning off the local storage system, if there is

some.

4. Turn off th

power supply of the external storage system (to turn off on purpose):

or write I/O to the external volume that is mapped as a local storage system

ume and is contained in the external storage system that you want to turn off.

Disconnect Subsystem command for the external storage system that you want

edure to execute the Disconnect Subsystem command, see

e power supply of the external storage system.

Caution:

external volume again, execute the Check Paths & Restore Volume command.

• To turn on the power supply of the external storage system to restart from the turned off status:

1. Turn on th

2. Execute the Check Paths & Restore Volume command of the External Storage.

Caution:

executed, you cannot access the mapped external volume from the local storage system as you just turn the external storage system on. It is necessary to execute the Check Paths & Restore Volume command to resume u deﬁned external volume is ready to be used as a mapped volume, the volume is set to accept the I/Os and you can resume using the volume as a mapped volume.

fter you have executed the Disconnect Subsystem command, but you need to use the mapped

e external storage system that contains the external volume, which is mapped as

an internal volume.

For the pr “Checking Connection Status and Resuming External Volume Operation” on page 91.

ocedure to execute the Check Paths & Restore Volume command, see

When the external storage system is turned off after the Disconnect Subsystem command is

sing the mapped external volume. The Check Paths & Restore Volume command checks the

information and the actual status of the external volume mapped as an internal volume. If the

Turning On or Off Only the Local Storage System

• To turn off the power supply of the local storage system (to turn off on purpose):

1. Stop the read or write I/O to the external volume that is mapped as a local storage system

internal volume.

2. Perform other operations that are required before turning off the local storage system, if there is

some.

3. Turn off the power supply of the local storage system.

Note:

As you turn off the power supply of the local storage system, all the data, which is for the external

volume, in the local cache memory is written in the external volume (all the data is destaged).

• To turn on the power supply of the local storage system to restart from the turned off status:

1. Turn on the external storage system that contains the external volume, which is mapped as

an internal volume.

2. Turn on the power supply of the local storage system.

Caution:

executed, you cannot access the mapped external volume from the local storage system as you just turn

When the local storage system is turned off after the Disconnect Subsystem command is

Performing External Storage Operations

the local storage system on. It is necessary to execute the Check Paths & Restore Volume command to resume using the mapped external volume. The Check Paths & Restore Volume command checks if the deﬁned information and the actual status of the external volume mapped as an internal volume match. If the external volume is ready to be used as a mapped volume, the volume is set to accept the I/Os and you can resume using the volume as a mapped volume.

Caution:

all the data in the cache memory is written to the external volume, the displayed information for Ext. VOL Status in theVolumeOperation window becomes Disconnect.

When the Disconnect Subsystem command or the Disconnect Volume command is executed and

Turning On or Off Both Storage Systems

This section explains how to turn on or off the power supply of both the local storage system and the external storage system taking the case where Business Copy is used as an example.

• To turn off th

1. Stop the rea

All read and

2. Split all Business Copy pairs (pairsplit operation).

For details on the pairsplit operation, see the HP StorageWorks XP24000 Business Copy Software User’s Guide.

3. Turn off th

Caution:

then go on to the next step.

4. Turn off the power supply of the external storage system.

Caution:

• To turn on the power supply of both storage systems:

1. Turn on the power supply of the external storage system.

Caution:

then go o

2. Turn on t

Caution

then go on to the next step.

3. Resynchronize all Business Copy pairs (pairresync operations).

For deta

Softwa

4. Start the read or write I/O to the local storage system.

All read and write I/Os with Fibre Channel connections should be started.

e power supply of both storage systems:

d or write I/O to the local storage system.

write I/Os with Fibre Channel connections should be stopped.

e power supply of the local storage system.

ake sure that the power supply of the local storage system is completely off and

Make sure that the power supply of the external storage system is completely off.

Make sure that the power supply of the external storage system is completely on and

n to the next step.

he power supply of the local storage system.

Make sure that the power supply of the local storage system is completely on and

ils on the pairresync operation, see the HP StorageWorks XP24000 Business Copy

re User’s Guide.

Disconnecting External Storage System or Disconnecting External Volume

The Disconnect Subsystem command and the Disconnect Volume command allow you to disconnect the external volume. You need to disconnect the external volume(s), for example, before you turn the power supply off of the local storage system or the external storage system for maintenance, or before you delete the external volume mapping.

As you execute the Disconnect Subsystem command or the Disconnect Volume command, the acceptance of the host I/O to the mapped external volume is stopped and all the data in the cache memory is written into the external volume (all the data is destaged).

The settings of the mapping are preserved, even though the external volume is disconnected using the Disconnect Subsystem command or the Disconnect Volume command. Therefore, you can resume using the external volume as a mapped volume with the former settings, even though once you have disconnected the external volume. For the procedure to resume using the disconnected external volume, see “Checking Connection Status and Resuming External Volume Operation” on page 91.

XP24000 External Storage Software User’s Guide

Caution:

as follows:

• After you have executed the Disconnect Subsystem command or the Disconnect Volume command,

• If you execute the Disconnect Subsystem command or the Disconnect Volume command when

• If thevolumeisonlinefromthe mainframehost, the Disconnect Subsystem command or the

• The Disconnect Subsystem command or the Disconnect Volume command cannot be executed

• When the Disconnect Subsystem command or the Disconnect Volume command is executed, the

• When the Disconnect Subsystem command or the Disconnect Volume command is executed and

The cautions on the Disconnect Subsystem command and the Disconnect Volume command are

click the Refresh command ( information,

I/Os from theopensystem hostare in progress,the host I/Os to thespeciﬁed volume are forcibly stopped. When command, stop the host I/Os and unmount from the host.

Disconnect V

the Vary Ofﬂine operation.

for externa Continuous for Mainframe, or XP Snapshot. However, if the pair status is PSUE, these commands can be executed. When the external volume is set as a pool volume (pool-VOL) and the status of that XP Snapsho

for external volumes including the LDEVs for which the migration processing of Auto LUN is in progress.

displayed information for Ext. VOL Status in theVolumeOperation window becomes Cache

Destage. Cache De Volume command has been completed.

all the d Ext. VOL Status in theVolumeOperation window becomes Disconnect.

and check the current progress status.

you execute the Disconnect Subsystem command or the Disconnect Volume

olume command cannot be executed. Stop the host I/Os to the volume and perform

l volumes that are set as the pair of Business Copy, ShadowImage for Mainframe,

Access Journal, Universal Replicator for Mainframe, Continuous Access, TrueCopy

t pair is PAIR, these commands can be executed.

Even if there is no data left in the cache memory, the displayed status remains as

stage, until the processing of the Disconnect Subsystem command or the Disconnect

ata in the cache memory is written to the external volume, the displayed information for

) on the Remote Web Console main window to update the

Disconnecting All External Volumes (Disconnect Subsystem)

To disconnect all the external volumes in the external storage system at once:

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Right-clickthe productnamethatyou want to disconnect in theVolumeOperation tree.

Apop-upmenuisdisplayed.

4. Click Disconnect Subsystem in the pop-up menu.

The settings are displayed in blue and italics.

5. Verify the settings in the Preview dialog box (see “Preview Dialog Box”onpage57).

6. Click Apply in theVolumeOperation window.

Caution:

command, you need to execute the Check Paths & Restore Volume command.

onnecting an Individual External Volume (Disconnect Volume)

Disc

To disconnect an individual external volume:

1. Start Remote Web Console, and open the Volume Operation window.

2. Mak

3. Click the product name in the Volume Operation tree.

4. Right-click the external volume that you want to change in the Volume Operation list.

To access the external storage system after you have executed the Disconnect Subsystem

esure thatRemoteWeb ConsoleisinModifymode.

Performing External Storage Operations

Apop-up menuis displayed.

5. Click Disconnect Volume in the pop-up menu.

The settings are displayed in blue and italics.

6. Verify the settings in the Preview dialog box (see “Preview Dialog Box” on page 57).

7. Click Apply in theVolumeOperation window.

Caution:

command, you need to execute the Check Paths & Restore Volume command.

To access the external storage system after you have executed the Disconnect Volume

Checking Con Operation

You can resume external volume operation by executing the Check Paths & Restore Volume command in the following cases:

• The Check Paths & Restore Volume command is required to be executed to resume using the

disconnect Volume command.

• When the errors occur in all the cross-subsystem paths, the local storage system makes the status of

external v If the status of the external volume cannot be restored even though the Check Paths & Restore Volume command is executed, see “Troubleshooting for External Storage”onpage107 and restore the path to the external storage system according to the procedure of the troubleshooting. Then execute the Check Paths & Restore Volume command to make the external volume in the Blockade

• When the Check Paths & Restore Volume command is executed for the disconnected external

volume for which the mapping settings are preserved, the deﬁned mapping setting and the current status of the external volume are compared and checked if the settings match the actual status. The path status and all other mapping conﬁguration deﬁnitions are checked. If the external volume can be resumed as a mapped volume as a result of the checking processing, the volume status is setto beavailablefor theI/O operation.

Cautio

and then the Refresh command ( and check the current progress status.

Note:

to be restored as the mapped volume, the external volume is set to accept the I/Os and you can resume using the external volume as a mapped volume. However, if the external volume is not ready to be resumed, the status of the disconnected volume remains as Blockade.

olume to Blockade. In this case, execute the Check Paths & Restore Volume command.

After you have executed the Check Paths & Restore Volume command, click the Status button

When the Check Paths & Restore Volume command is executed and the external volume is ready

nection Status and Resuming External Volume

ed external volume using the Disconnect Subsystem command or the Disconnect

status usable.

) on the Remote Web Console main window to update the information,

Resuming All External Volumes (Check Paths & Restore Volume)

sume all the external volumes in the external storage system at once:

To re

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Rig

4. Click Check Paths & Restore Volume in the pop-up menu.

5. Ver

6. Click Apply in theVolumeOperation window.

ht-click the product name that you want to resume connection in the Volume Operation tree.

Apop-up menuis displayed.

ettings are displayed in blue and italics.

The s

ify the settings in the Preview dialog box (see “Preview Dialog Box” on page 57).

The Ext. VOL Status in the Volume Operation window changes to Checking. When the checking processing of mapping path status is completed, and the external storage system can be

XP24000 External Storage Software User’s Guide

resumed, the Ext. VOL Status changes to Normal. If the external storage system can not be resumed, the Ext. VOL Status changes to Blockade.

Resuming an Ind

To resume an individual external volume:

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that

3. Click the path group in the Volume Operation tree.

4. Right-click the external volume that you want to resume connection in the Volume Operation list.

Apop-upmenu

5. Click Check Paths & Restore Volume in the pop-up menu.

The settings are displayed in blue and italics.

6. Verify the settings in the Preview dialog box (see “Preview Dialog Box”onpage57).

7. Click Apply i

The Ext. VOL Status in theVolumeOperation window changesto Checking. When the checking processing of mapping path status is completed, and the external volume can be resumed, the Ext. VOL Status changes to Normal. If the external volume can not be resumed, the Ext. VOL Status changes to Blockade.

ividual External Volume (Check Paths & Restore Volume)

Remote Web Console is in Modify mode.

is displayed.

nthe Volume Operationwindow.

Stopping the Use of Paths to the External Volume (Disconnect Paths)

You use the Disconnect Paths command to prepare for stopping the use of the cross-subsystem path. For example, when you want to maintain one of the cross-subsystem paths, you can stop the speciﬁed cross-subsystem path while the local storage system is still connected to the external volume. To resume the use of the cross-subsystem path which is stopped by the Disconnect Paths command, use the Check

Paths command (see “Restoring the Paths to the External Volume (Check Paths)” on page 93).

Note:

The Disconnect Paths command is not for the actual disconnection of the cross-subsystem path to the external volume. You need to conﬁrm that some normal cross-subsystem paths to the external volume is set, other than the cross-subsystem path for which you plan to execute the Disconnect Paths command.

To stop the use of the paths to the external volume:

1. Start Remote Web Console, and open the Path Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Select one of the following from the drop-down list above the Path Operation tree.

• Fibre - Local Subsystem: Displays the ports in the local storage system. Select Fibre - Local

Subsystem to stop the use of all the cross-subsystem paths connected to the speciﬁed port in

thelocal storagesystem.

• Fibre - External Subsystem: Displays the WWNs in the external storage system. Select Fibre -

External Subsystem to stop the use of all the cross-subsystem paths connected to the speciﬁed WWNs (ports) in the external storage system.

4. Click Subsystem or the product name in the Path Operation tree.

5. Right-click the port or WWN that you want to stop the use of in the Path Operation list.

Apop-upmenuisdisplayed.

6. Click Disconnect Paths in the pop-up menu.

The settings are displayed in blue and italics.

7. Verify the settings in the Preview dialog box (see “Preview Dialog Box”onpage57).

8. Click Apply in the Path Operation window.

The settings are applied to the local storage system and the Path Operation window is displayed normally. When an error occurs, an error message is displayed. Verify the details in the Preview dialog box.

Performing External Storage Operations

Restoring the Pa

You use the Check Paths command to resume using the cross-subsystem path which was stopped by the

Disconnect Paths command.

Note:

The path h

To restore the path to the external volume:

1. Start Remote Web Console, and open the Path Operation window.

2. Make sure that

3. Select one of the following from the drop-down list above the Path Operation tree.

• Fibre - Local Subsystem: Displays the ports in the local storage system. Select Fibre - Local

Subsystem to restore all the cross-subsystem paths connected to the speciﬁed port in the

local storag

• Fibre - External Subsystem: Displays the WWNs in the external storage system. Select Fibre

-ExternalSubsystem to restore all the cross-subsystem paths connected to the speciﬁed WWNs (ports) in the external storage system.

4. Click Subsy

5. Right-click the port or WWN that you want to restore in the Path Operation list.

Apop-up menuis displayed.

6. Click Check

The settings are displayed in blue and italics.

7. Verify the settings in the Preview dialog box (see “Preview Dialog Box” on page 57).

8. Click Apply in the Path Operation window.

The settin normally. Preview dialog box.

stem or the product name in the Path Operation tree.

gs are applied to the local storage system and the Path Operation window is displayed

When an error occurs, an error message is displayed. Verify the details in the

ths to the External Volume (Check Paths)

as to be in a status that can be restored.

Remote Web Console is in Modify mode.

esystem.

Paths in the pop-up menu.

Changing the Cache Mode Setting of the External Volume

You can change the cache mode of the external volume in the Volume Operation window. To change the cache mode of the external volume, you need to right-click the external volume, click the Change Cache Mode in the pop-up menu, and then click Enable or Disable.

You need to check the following before changing the cache mode of the external volume.

• Whether thevolumeisnot setasavolume whichconstitutes apartofaLUSE volume.

When it is setasavolume whichconstitutes apartofaLUSE volume,the cachemodesetting should be same among all volumes which constitutes a LUSE volume.

• Whether the bind mode of Cache Residency Manager is not set.

When the bind mode is set, you cannot change the cache mode from Enable to Disable.To change thecache modeto Disable, cancel the setting for Cache Residency Manager or change the cache residency mode to the priority mode.

• Whether the volume is not a remote command device.

When the volume is a remote command device, you cannot change the cache mode from Disable to Enable.

To change the cache mode of the external volume:

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Click the path group in the Volume Operation tree.

4. Right-click the external volume that you want to change in the Volume Operation list.

Apop-up menuis displayed.

5. Click Change Cache Mode in the pop-up menu and click Enable or Disable in the submenu.

The settings are displayed in blue and italics.

XP24000 External Storage Software User’s Guide

6. Verify the settings in the Preview dialog box (see “Preview Dialog Box”onpage57).

7. Click Apply in theVolumeOperation window.

Changing the I

You can change change the inﬂ the Inﬂow Con

To change the inﬂow control setting of the external volume:

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure tha

3. Click the path group in the Volume Operation tree.

4. Right-click the external volume that you want to change in the Volume Operation list.

Apop-upmen

5. Click Inﬂow Control in the pop-up menu and click Enable or Disable in the submenu.

The settings are displayed in blue and italics.

6. Verify the settings in the Preview dialog box (see “Preview Dialog Box”onpage57).

7. Click Appl

nﬂow Control Setting of the External Volume

the inﬂow control setting of the external volume in the Volume Operation window. To

ow control setting of the external volume, you need to right-click the external volume, click

trol in the pop-up menu, and then click Enable or Disable.

tRemoteWeb ConsoleisinModifymode.

uisdisplayed.

y in theVolumeOperation window.

Changing the Port Setting of the External Storage System

You can change the setting of the port of the external storage system in the Path Operation window. For changing the setting of the port, use the Change WWN Parameter dialog box.

Caution: Caution: Caution:

system. To change the port setting of the external storage system:

1. Start Remote Web Console, and open the Path Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Select Fibre - External Subsystem from the drop-down list above the Path Operation tree.

4. Click the product name in the Path Operation tree.

5. Right-click the WWN that you want to change the setting in the Path Operation list.

6. Click Change WWN Parameter in the pop-up menu.

7. Change the set parameter of the selected port on the Change WWN Parameter dialog box.

8. Click OK to close the Change WWN Parameter dialog box.

9. Verify the settings in the Preview dialog box (see “Preview Dialog Box”onpage57).

10. Click Apply in the Path Operation window.

If thedefault settinghas no problem, usethe defaultsetting as it is. For the volume used in usual I/O, set IO TOV within 15 seconds. For changing the setting, match the value to the recommended value of the external storage

Apop-upmenuisdisplayed.

The Change WWN Parameter dialog box is displayed (see Figure 44 on page 95).

You are returned to the Path Operation window. The selected items are displayed in blue and italics.

Performing External Storage Operations

Change WWN Par

Figure 44 Change WWN Parameter Dialog Box

The Change WWN Parameter dialog box consists of:

• QDepth (2-128): The number of Read/Write commands which can be issued (queued) to the

external volume at a time. The value that can be set are from 2 to 128.

• IO TOV (5-240):Value speciﬁed as the time over of the I/O to the external volume. The value that

canbeset are5to 240(in second).

• Path Blockade Watch (5-180): The time from when the connection of all the paths to the external

volume have been down to when the external volume is blocked. The commands from the host are accepted until the time set for this parameter has passed. After the time set for this parameter has passed, the path status becomes Blockade. The value that can be set are from 5 to 180 (seconds).

ameter Dialog Box

Editing M

apping Policy

You choose mapping policy when you map an external volume as an internal volume using the Add Volume commands. This section explains how to edit the default mapping policy. For details on mapping policy, see “Choosing Mapping Policy” on page 30.

To edit t

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Right-c

4. Click Edit Policy in the pop-up menu.

5. Click D

6. Edit the settings in the Policy.

7. Click Close to close the Edit Policy dialog box.

he mapping policy:

lick Subsystem in the Volume Operation tree:

Apop-up menuis displayed.

The Edit

The map

Policy dialog box is displayed (see “Edit Policy Dialog Box” on page 95).

efault Policy in the Pattern.

ping policy is changed, and then the Volume Operation window is displayed.

Edit Policy Dialog Box

The Edit Policy dialog box allows you to edit the mapping policy.

XP24000 External Storage Software User’s Guide

Figure 45 Edi

The Edit Policy dialog box consists of:

• Pattern: Mapping policies. Default Policy is prepared.

• Policy: The content of the selected mapping policy is displayed.

• Emulation Type: The emulation type of the external volume set when it was mapped. To

select an emulation type other than OPEN-V, select the Except OPEN-V check box and select the emulation type from the drop-down list.

• CLPR: CLPR used for accessing to the mapped volume when the cache memory is partitioned

using Disk/Cache Partition.

• SLPR: SLPR that the selected CLPR belongs to. However, when the emulation type for the

mainframe is selected in Emulation Type, you can only select CLPR that belongs to SLPR number 0.

• Cache mode: displays if the write I/O from the host is propagated synchronously (Disable)

or asynchronously (Enable) to the external storage device.

• Inﬂow Control: displays the writing operation to the cache memory is stopped (Enable)or

continued (Disable) when the writing operation to the external volume is impossible.

• Number of LDEVs: maximum number of LDEVs to be created in the external volume.

• Auto Discovery of Ports: displays whether to search for the WWN connected to all the

external ports (Enable) or to search for the WWN connected to only the external port which you specify (Disable). If you set Enable, Port Discovery is automatically executed before the Conﬁgure Cross-subsystem Paths dialog box is displayed.

• Close button

Close the Edit Policy dialog box.

• Pop-up menu

The Edit Policy dialog box does not have a pop-up menu that can be displayed.

t Policy Dialog Box

Deleting the External Volume Mapping

You can start the operation of deleting the external volume mapping from the Volume Operation window. To delete the mapping of the external volume, click the Delete Volume command in the pop-up menu displayed in the Volume Operation window. Though you can delete the setting of mapping for an internal volume and an external volume using the Delete Volume command, you cannot delete data in the external volume. You cannot delete data in the internal volume either.

You need to check the following before deleting the external volume mapping.

• Whether the execution of any application (for example, RAID Manager) that is using the

command device is in progress or not. If the execution of any application that is using the command device is in progress, stop the application.

• Whether the Disconnect Subsystem command or the Disconnect Volume command is executed.

Performing External Storage Operations

All the data in the cache memory must be written into the mapped external volume using the Disconnect Subsystem command or the Disconnect Volume command. For detailed informationonthe Disconnect Subsystem command and the Disconnect Volume command, see “Disconnecting External Storage System or Disconnecting External Volume” on page 89.

• Whether the volume is set as a volume which conﬁgures a LUSE volume.

When it is set as a volume which conﬁgures a LUSE volume, you cannot delete the external volume mapping.

• Whether an LU path is set.

When an LU path is set to the mapped volume, you cannot delete the external volume mapping.

• Whether the volume is set to conﬁgure the Continuous Access pair, Continuous Access Journal

pair, Business Copy pair, or XP Snapshot pair. When the volume is set to conﬁgure the Continuous Access pair, Continuous Access Journal pair, Business Copy pair, or XP Snapshot pair, you cannot delete the external volume mapping.

• Whether the volume is set as a reserved volume for Business Copy or Auto LUN.

When the volume is set as the reserved volume for Business Copy or Auto LUN, you cannot delete the external volume mapping.

• Whether the volume is set as a pool-VOL.

When the volume is set as a pool-VOL, you cannot delete the external volume mapping.

To delete the external volume mapping:

1. Start Remote Web Console, and open the Volume Operation window.

2. Make sure that Remote Web Console is in Modify mode.

3. Click the path group in the Volume Operation tree.

4. Right-click the external volume that you want to delete in the Volume Operation list.

Apop-up menuis displayed.

5. Click Delete Volume in the pop-up menu.

The settings are displayed in blue and italics.

6. Verify the settings in the Preview dialog box (see “Preview Dialog Box” on page 57).

7. Click Apply in theVolumeOperation window.

8. When a message asking if you have performed the Disconnect operation is displayed, click Yes

if you have already performed the Disconnect Subsystem command or the Disconnect Volume command. Click No if you have not performed the Disconnect Subsystem command or the Disconnect Volume command yet.

•If you click Yes, the setting is applied to the local storage system, and the external volume where the mapping is deleted is removed from the Volume Operation list.

•If you click No, a message asking if you want to execute the Delete Volume operation without writing the data in the cache memory into the external volume is displayed. Click OK if you want to execute the Delete Volume operation without writing the data in the cache memory into the external volume. Click Cancel if you want to cancel the operation. As you click OK, the setting is applied to the local storage system, and the external volume where the mapping is deleted is removed from the Volume Operation list.

Note:

As you click OK, the Delete Volume operation will be performed, however, the data in

the cache memory that is not written to the volume is not guaranteed.

When an error occurs, an error message is displayed. Verify the details in the Preview dialog box.

Note:

The operation may not be performed if some parts of the local storage system are blocked. In this

case, restore the blocked parts of the local storage system ﬁrst, and then retry the operation.

XP24000 External Storage Software User’s Guide

Performing External Storage Operations

6 Remote Command Devices

This chapter describes remote command device.

Overview of Remote Command Devices

A remote command device is a device in the local storage system to which a command device in the external stor

As you send the RAID Manager commands to the remote command device, you can enter these RAID Manager commands to the command device of the external storage system to operate the RAID Manager in the external storage system.

Figure 46 on pa

sends the RAI device, and this means that the commands are entered to the command device in the external storage system to operate the Business Copy pair or the Continuous Access pair in the external storage system.

For detailed information about RAID Manager and the command device, see the HP StorageWorks XP

RAID Manager

age system is mapped.

ge 100 shows an example. The OPEN host that is connected to the local storage system

D Manager commands of Business Copy or Continuous Access to the remote command

User’s Guide.

XP24000 External Storage Software User’s Guide

Figure46OutlineofRemoteCommandDevice

Guidelines for Remote Command Devices

Notices on remote command device are as follows:

• You can m

systems is connected as an external subsystem.

• Universal Storage Platform V

•TagmaS

• TagmaStore Network Storage Controller

• TagmaStore Adaptable Modular Storage

•TagmaS

• Lightning 9900V series

•Thunder 9500V series

•SANRI

• SANRISE Network Storage Controller

• SANRISE Adaptable Modular Storage

•SANR

•SANRISE9900V series

•SANRISE9500V series

•H240

• SANRISE H12000

• SANRISE H10000

•SAN

ap a command device as a remote command device when one of the following storage

tore Universal Storage Platform

tore Workgroup Modular Storage

SE Universal Storage Platform

ISE Workgroup Modular Storage

RISE H1024/H128

100

Remote Command Devices

HP XP External Storage Software User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

About this Guide

Intended Audience

Related Documentation

Conventions for Storage Capacity Values

HP Technical Support

Subscription Service

HP Websites

Documentation Feedback

1 Overview of HP StorageWorks XP External Storage Software

Unifying Connections from a Host to Different Storage Systems

2 About External Storage Operations

External Storage Components

External Storage Operations

Conﬁguring External Storage

Choosing Mapping Policy

Using a Mapped External Volume from a Connected Host

Examples of Using External Volumes with Other Products

3 Preparing for External Storage Operations

System Requirements

Guidelines for External Storage Operations

4UsingtheExternalStorageGUI

Volume Operation Window

Path Operation Window

Port Operation Window

5 Performing External Storage Operations

Overview of Setting Operations

Setting Port Attribute for Local Storage System

Mapping an External Volume Manually

After setting the attribute of the port used for External Storage to the external port, you are enabled to map the external volume as an internal volume. This section explains the manual mapping. For details on automatic mapping, see “Mapping an External Volume Automatically” on page 69.

Stopping the Use of Paths to the External Volume (Disconnect Paths)

Changing the Cache Mode Setting of the External Volume

Changing the Port Setting of the External Storage System

Deleting the External Volume Mapping

6 Remote Command Devices

Overview of Remote Command Devices

Guidelines for Remote Command Devices