HP StorageWorks XP Remote Web Console Software User Manual

HP StorageWorks XP24000 Disk/Cache Par tition User's Guide

Part number: T5214–96004

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 .......................... 7

IntendedAudience...................................... 7

RelatedDocumentation.................................... 7

DocumentConventions.................................... 7

ConventionsforStorageCapacityValues ............................ 7

WindowIllustrations ..................................... 8

HPTechnicalSupport..................................... 8

SubscriptionService ..................................... 8

HPWebsites ........................................ 8

Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1OverviewofHPStorageWorksXPDisk/CachePartition........ 11

2AboutDisk/CachePartitionOperations............... 13

OverviewofDisk/CachePartition .............................. 13

StorageManagementLogicalPartition(SLPR) ......................... 13

CacheLogicalPartition(CLPR)................................ 14

3PreparingforDisk/CachePartitionOperations............ 17

StorageAdministratorandStoragePartitionAdministratorPrivileges................ 17

Possible Interacting and ConﬂictingFunctions ......................... 18

4UsingtheDisk/CachePartitionGUI ................ 23

The License Key Partition DeﬁnitionWindow.......................... 23

TheLogicalPartitionWindow ................................ 27

TheStorageManagementLogicalPartitionWindow ...................... 28

TheCacheLogicalPartitionWindow ............................. 30

5PerformingDisk/CachePartitionOperations............. 33

LaunchingDisk/CachePartition ............................... 33

StorageManagementLogicalPartitionOperations ....................... 33

CreatingaStorageManagementLogicalPartitionOperations ................ 33

MigratingResourcesToandFromStorageManagementLogicalPartitions ........... 34

DeletingStorageManagementLogicalPartitions ...................... 34

CacheLogicalPartitionOperations.............................. 35

CreatingaCacheLogicalPartition............................ 35

MigratingResourcesToandFromCacheLogicalPartitions.................. 35

DeletingCacheLogicalPartitions............................. 36

PartitioningandAllocatingLicensedCapacity ......................... 36

6Troubleshooting . ........................ 39

Troubleshooting...................................... 39

DisplayinganErrorMessage ................................ 40

AAcronymsandAbbreviations ................... 41

XP24000 Disk/Cache Partition User's Guide

Index .............................. 43

Figures

onLicensedCapacity............................... 26

AnExampleofStorageManagementLogicalPartitionFunction............ 14

AnExampleofCacheLogicalPartition ...................... 15

StorageAdministratorandStoragePartitionAdministrator .............. 18

AnExampleofPerformingManualMigrationbetweenSLPRs............. 21

The License Key Partition DeﬁnitionWindow.................... 24

ProgramProductList .............................. 25

InformationontheLicensedCapacityoftheProgramProduct............. 25

PartitionStatusListandSettingBox........................ 26

Setting Box for Program Product with Unlimited Licensed Capacity or that does Not Depend

Par tition Deﬁnition Window (Initial Screen or Subsystem Selected) . . . . . . . . . . . 27

Par tition DeﬁnitionWindow(SLPRSelected) .................... 28

Par tition DeﬁnitionWindow(CLPRSelected).................... 30

SelectCUDialogBox ............................. 36

XP24000 Disk/Cache Partition User's Guide

Tables

1 2

3 4 5

DocumentConventions .............................. 7

Capacity for the Data in a Hard Di sk Drive that is Associated with a CLPR and the

Recommended Cache Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . 16

AvailableFunctionsfortheStoragePartitionAdministrator.............. 18

GeneralTroubleshootingfortheDisk/CachePartitionOperations........... 39

AcronymsandAbbreviations .......................... 41

About this Guide

This user's guide describes and provides instructions for performing Disk/Cache Partition 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 direct-access storage device

subsystems and their basic functions,

• the user is familiar with the storage system,

• the user has r

Guide and the HP StorageWorks XP24000 Remote Web Console User’s Guide,and

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

Remote Web Console and Disk/Cache Partition remote console software.

Related D ocumentation

• HP StorageWorks XP24000 Disk Array Owner's Guide

• HP StorageWorks XP24000 Remote Web Console User’s Guide

• HP StorageWorks XP RAID Manager User’s Guide

• HP StorageWorks XP24000 LUN Manager User’s Guide

• HP StorageWorks XP24000 Remote Web Console Error Codes

ide assumes that:

and understands both the HP StorageWorks XP24000 Disk Array Owner's

ead

You can ﬁnd related HP StorageWorks documents from the Manuals page of the HP Business Support Center website:

ttp://www.hp.com/support/manuals.

In the Storage section, click Storage Software and then select the product.

Document Conventions

Table 1 Document Conventions

Convention Blue text: Table 1 Blue, underlined text:

ttp://www.hp.com

Bold text

Element

Cross-refe

Website addresses

• Text emphasis

•

rence links and e-mail addresses

UI elements

Conventions for Storage Capacity Values

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

• 1KB(kil

obyte) = 1,000 bytes

XP24000 Disk/Cache Partition User's Guide

• 1 MB (megabyte) = 1,0002 bytes

bytes

• 1 GB (gigabyte) = 1,000

• 1 TB (terabyte) = 1,000

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

• 1KB(kilobyte)=1,024bytes

• 1MB(megabyte)= 1,024

• 1 GB (gigabyte) = 1,024

• 1TB (terabyte) =1,024

• 1block =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

trations

system 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 no tiﬁcation of product enhancements, new driver versions, ﬁrmware updates, and other product resources.

HP Websites

For add itional 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

omes your feedback.

About this Guide

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

storagedocsFeedback@hp.com. All submissions become the property of H P.

XP24000 Disk/Cache Partition User's Guide

About this Guide

1OverviewofHPStorageWorks XP

Disk/Cache Partition

The HP storage system can connect to multiple hosts and be shared by multip le users, such as d ifferent departments or even different compa nies. This can cause conﬂicts among the various users. For example, if a particular host issues a large number of I/O requests, the I/O performance of other hosts may decrease. If the various ad m inistrators have different storage policies and procedures, or issue conﬂicting commands, that can cause difﬁculties. Disk/Cache Partition has t wo main functions: storage management logical partition (SLPR), and cache logical partition (CLPR).

Storage Management Logical Partition allows you to divide the available storage among various users. A storage system can be shared among several groups that may have different storage administrators. This can

cause problems if those administrators have differing or conﬂicting storage procedures, or if two or more administrators attempt to perform operations on the same logical volume, such as HP StorageWorks XP

LUN Expansion (LUSE) or HP StorageWorks XP Virtual LVI/LUN (VLL). The storage management logical partition function can allocate the storage system resources into two or more virtual storage systems, each of which can b e accessed only by the storage administrator, the storage partition administrator for that storage management logical partition, and the users for that partition.

Cache Logical Partition allows you to divide the cache into multiple virtual cache memories. If one storage system is shared with multiple hosts, and one host reads or writes a large amount of data, read and write data can require enough of the cache memory to affect other users. The cache logical partition function creates two or more virtual cache memories, with each allocated to a different host. This prevents contention for cache memory.

XP24000 Disk/Cache Partition User's Guide

Overview of HP StorageWorks XP Disk/Cache P artition

2 About Disk/Cac he Partition Operations

The storage systems can connect multiple hosts and can be shared by multiple de partments in an enterprise, and also shared by multiple companies. Under this circumstances, if a host issues a lot of I/O requests, the I/O performance of other hosts may decrease. If a subsystem's administrator of a department or an enterprise performs an inappropriate operation, there is a possibility that data of other departments or companies are leaked or broken. Disk/Cache Partition enables you to prevent these risks. “Overview of HP XP Disk/Cache Partition” on page 11 describes the overview of Disk/Cache Par tition and its features.

Overview of

Disk/Cach Par tition function

Cache Logical Partition enables you to partition the built-in cache memory in the storage system into multiple virtual cache memories. Furthermore, by allocating the partitioned virtual cache to a host, the I/O performance of other hosts can be protected from decreasing even if one host issues many I/O requests.

Storage Management Logical Partition enables you to partition a subsystem into multiple virtual subsystems. Because the administrator of the virtual subsystem cannot access the other virtual subsystem that

he/

administrators who administrate other virtual subsystem, or the data leaked. Section “Storage M a nagement Logical Partition (SLPR)” on page 13 d escribes the Cache Logical Partition

and the S

Disk/Cache Partition

Partition is the function to logically partition the resources in the storage system. Disk/Cache

contains the Cache Logical Partition function and the Storage Management Logical Partition

administrates, your data is protected from the risks, such as the data destroyed by other

she

torage Management Logical Partition.

Storage Management Logical Partition (SLPR)

Storage system can be shared with the plural organizations, for example, enterprises, and depa rtments within the enterprise. Therefore, the plural administrators who a re belonged in the different organizations may manage one subsystem. Under this circumstances, an administrator who is belonged in an organization is potentially destroying the volumes of other organizations. Furthermore, there is a risk of deriving a complicated a nd difﬁcult management of storage system because of an incorrect operation by an administrator and its inﬂuence to the other organizations. The storage management logical partition function of Disk/Cache Partition can allocate all resources of one subsystem, that is, ports and CLPRs, to the plural virtual subsystem. Each virtual subsystem can be accessed by each administrator only. Therefore, the risks of which an administrator destroys the volumes of other organization, and the data of an organization leaks can be prevented. Figure 1 on page 1 4 shows an example of which one subsystem is partitioned to two virtual subsystems. Each virtual subsystem is allocated to two enterprises respectively. In this case, the subsystem administrator of enterprise A can manage the virtual subsystem of enterprise A, but cannot manage one of enterprise B. By the same token, the subsystem administrator of enterprise B can manag e the virtual subsystem of enterprise B, but cannot manage one of enterprise A.

The virtual subsystem that is created by the storage system's partitioned referred to as the SLPR (s management l created in one subsystem. See “Launching Disk/Cache Partition” on page 33 for creating SLPR.

Note

: Thoughyou usuallyneedthe licensekey to usethe StorageManagementLogical Partitionfunction

of Disk/Cache Partition, you may create up to 4 SLPRs (including SLPR0) without the license key.

ogical partition) . Up to 32 SLPRs including SLPR0 which is provided as a default can be

XP24000 Disk/Cache Partition User's Guide

torage

+ 30 hidden pages