HP StorageWorks 2405 User Manual

user’s guide

hp StorageWorks

disk system 2405

Edition E0902

.

Notice

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© Hewlett-Packard Company, 2002. All rights
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A6250-96020
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Revision History

First Edition March 2002
Second Edition June 2002
Third Edition Sept 2002

1 Product Description 13

General Description 13
Features 14

Status Indicators 15
Power/Standby Switch 15
High Availability 15
Upgradability 16
Environmental Services 16

Components 17

Disks and Disk Fillers 17
LCCs 18

Power Supply/Fan Modu le 21
Hardware/Software Requirements 23
Topologies 23

Single Host Basic Configuration 24

Single Host PV Links Configuration 25

Two Host High Availability Configuration 26

Four Host Hub C onfiguration 2 7
Definitions 28

contents

2 Installation 31

Preparation 31

Electrical Requirements 31

Choosing PDUs 32
Installing PDU/PDRUs 34

Software Requirements 37
Step 1: Gather Tools 38
Step 2: Unpack the Product 38

5

Step 3: Install the device 41

Installing the Storage Device into a Rack System/E 41
Installing the storage device into an HP Computer Cabinet 49
Installing the Storage Device into a Rittal-Style Rack 56

Install the Disk System 63
Step 4: Confi gure LCCs 64
Step 5: Set LCC Switches 66
Step 6: Connect FC and Power Cables 72
Step 7: Install Disk Modules 75
Step 8: Turn on the Disk System 76
Step 9: Verify Devices on the Host 78

Sample IOSCAN 78

Where do you go from here? 79

3 Configuration 81

Viewing a Disk System in IOSCAN 81

Sample IOSCAN 81

Interpreting the Hardware Path 83

Loop IDs and Hardware Paths by Enclosure ID 84
Setting Up the Hardware Event Monitor 88
Aliasing Devices (HP-Qualified Only) 88

Using SAM 88

Using STM (HP-Qualified Only) 88
Updating Firmware (HP-Qualified Only) 9 0

4 Troubleshooting 93

Overview 93
Event Notification 93
Status LEDs 96
Online Status Information 98

Viewing Component Status in SAM 98

Viewing the STM Information Log 99

Interpreting Status Values 100

Checking the Fibre Channel Link 102
Isolating Causes 104

6

5 Removal and Replacement 109

Disk Module 111

Preparation 111

To Determine If a Volume Group or Physical Volume Group Is
Active 111

To Determine If the Physical Volume Is Attached 112
To Replace Attached Physical Volumes 112

To Replace Unattached Physical Volumes 114
Tools 115
Procedure 115

LCC 117

Tools 117
Procedure 117

Power Supply 120

Tools 120
Procedure 120

Disk System 122

Tools 122
Procedure 122

Top Cover (HP-Qualified Only) 124

Tools 124
Procedure 124

Midplane (HP-Qualified Only) 126

Tools 126
Procedure 126

6 Reference 129

Product Models and Options 129

Upgrade Products 130
PDU/PDRU Products 131

Replaceable Parts 132
Specifications 132

Dimensions 132
Weight 133
AC Power Input 133
DC Power Output 133

7

Heat Output 133
Environment 134
Acoustics 134
Safety Certifications 134
EMC Compliance 135

Regulatory Statements 136

A. FCC Statement (For U.S.A. Only) 136
B. IEC Statement (Worldwide) 136
C. Spécification ATI Classe A (France) 137
D. Product Noise Declaration (Germany) 137
E. VCCI Statement (Japan) 138

Harmonics Conformance (Japan) 138
F. BSMI EMC Statement (Taiwan) 138
G. Declaration of Conformity 139

Product Web Site 140
Related Documents 140

8

figures

Figure 1 Disk System Front View 14
Figure 2 Disk System Back View 14
Figure 3 Disk Module 18
Figure 4 LCC 19
Figure 5 Power Supply/Fan Module 21
Figure 6 Single Initiator Basic Configuration 24
Figure 7 Single Host PV Links Configuration 25
Figure 8 Two Host High Availability Con figuration 26
Figure 9 Four Host Hub Configuration 27
Figure 10 PDRU Placement in 1.6-Meter Rack 35
Figure 11 PDRU Placement in a 2.0-Meter Rack 36
Figure 12 Disk System Accessories 39
Figure 13 Disk System Contents 40
Figure 14 HP Rack System/E Rail Kit Contents 41
Figure 15 HP Rack System/E Installation Overview 42
Figure 16 Locating the site for the device installation in a System/E

rack 44
Figure 17 Installing clipnuts for an HP Rack System/E 44
Figure 18 Installing rails in an HP Rack System/E 45
Figure 19 Installing the enclosure clipnut in an HP Rack System/E 46
Figure 20 Installing the storage device in the Rack System/E 47
Figure 21 Installing enclosure rail clamps in an HP Rack

System/E 48
Figure 22 HP Computer Cabinet Rail Kit Contents 49
Figure 23 HP Computer Cabinet Installation Overview 50
Figure 24 Locating the site for the device installation in an HP

Computer Cabinet 51
Figure 25 Installing rail clip nuts in the HP Computer Cabinet 51
Figure 26 Installing rails in the HP Computer Cabinet 52
Figure 27 Installing enclosure retention clipnuts in an HP Computer

Cabinet 53
Figure 28 Installing the storage device in an HP Computer

Cabinet 54

9

Figure 29 Installing a filler panel in an HP Computer Cabinet 55
Figure 30 Rittal-Style Rail Kit Contents 56
Figure 31 Rail Alignment 57
Figure 32 Front Screw Installation 57
Figure 33 Rear Slide Extension 58
Figure 34 Center Nut Tightening 59
Figure 35 Installing a Disk System into the Rittal-Style Rack 60
Figure 36 Moving a Disk System Retention Bracket 61
Figure 37 Bolting the Disk System to the Front C olum n o f the

Rack 62
Figure 38 LCC Internal Configuration Switch 64
Figure 39 LCC Installation 65
Figure 40 Fiber Optic Cabling and Address Switch Settings with 1

Disk System 66
Figure 41 Fiber Optic Cabling and Address Switch Settings with 2

Disk Systems 67
Figure 42 Fiber Optic Cabling and Address Switch Settings with 3

Disk Systems 68
Figure 43 Fiber Optic Cabling and Address Switch Settings with 4

Disk Systems 69
Figure 44 Fiber Optic Cabling and Address Switch Settings with 5

Disk Systems 70
Figure 45 Fiber Optic Cabling and Address Switch Settings with 6

Disk Systems 71
Figure 46 Wiring Scheme for 1.6-Meter Rack 73
Figure 47 Wiring Scheme for 2.0-Meter Rack 74
Figure 48 Disk Module Installation 75
Figure 49 Power/Standby Switch and System LEDs 77
Figure 50 Annotate Device Using STM 89
Figure 51 Firmware File Selection Window 90
Figure 52 Firmware Download Confirmation Window 91
Figure 53 Firmware Tool Window 92
Figure 54 Sample Hardware Event Notification 95
Figure 55 LED Status Indicators 96
Figure 56 Disk System Field Replaceable Units (FRUs) 109
Figure 57 Disk Module Removal 116
Figure 58 LCC Removal and Replacement 118
Figure 59 LCC Address Switches and LEDs 119
Figure 60 Power Supply Removal and Replacement 121
Figure 61 Disk System Removal and Replacement 123
Figure 62 Top Cover Assembly 125
Figure 63 Midplane Assembly 128

10

tables

Table 1 Inrush (Surge) Current and Duration 31
Table 2 Maximum Operating Current 32
Table 3 Recommended PDU/PDRUs for Multiple Disk Systems in

HP Legacy Racks 33

Table 4 Recommended PDU/PDRUs for Multiple Disk Systems in

HP System/E Racks 33
Table 5 Disk System Accessories 38
Table 6 Dis k System Conte nts 39
Table 7 Rail Positions for Sequential Disk Systems 43
Table 8 Loop IDs and Hardware Paths by Slot Number and

Enclosure ID 0 - 2 84
Table 9 Loop IDs and Hardware Paths by Slot Number and

Enclosure ID 3 - 4 85
Table 10 Loop IDs and Hardware Paths by Slot Number and

Enclosure ID 5- 6 86
Table 11 LED Functions 96
Table 12 Status Indications 100
Table 13 Troubleshooting Table 104
Table 14 Disk System Field Replaceable Units 110
Table 15 Upgrade Products 130
Table 16 PDU/PDRU Pr oducts 131
Table 17 Replacement and Exchange Part Numbers 132
Table 18 Product Weights 133

11

12

Product Description

General Description

Hewlett-Packard’s StorageWorks Disk System 2405 (referred to in this guide as
the disk system) is a high-availability Fibre Channel (FC) storage product. Dual
optical fiber ports on dual link controllers provide Fibre Channel connections to
the host. Fifteen slots accept high-speed, high-capacity FC disks connected to a
FC midplane. Data throughput is 200 Mbytes/sec. Thirteen disk systems fill a
2-meter System/E rack. Filled with 18-Gbyte disks, the 2-meter Rack System/E
yields 3.51 Terabytes of storage; with 36 -Gbyt e dis ks , 7.0 2 Teraby tes of s t orag e;
and with 73-Gbyte disk, 14.23 Terabytes.

Modular and redundant components are easy to upgrade and maintain. Disks,
power supplies, and link control cards ( LCCs) are replaceable parts that plug into
individual slots in the front and back of the disk system. Redundant power
supply/fan modules and LCCs can be remo ved and replaced without interrupting
storage operations. Disks can be replaced with the system on, and only the
affected file systems taken off -line. Hewlett-Packard technical support is optional
for these procedures.

1

Special electronics and HP-UX software enable remote monitoring and
diagnostics. Sensors on the LCCs monitor the disk system environment,
including temperature, voltage, fan speed, and component status. Hewlett­Packard’s Command View SDM reports any changes in environmental status to
user-defined locations. Standard HP-UX diagnostic utilities also report
environmental data for enhanced troublesho oti ng.

Product Description 13

Status Indicators

LEDs on the disk system enable you to detect and replace failed components and
thereby prevent or minimize users’ downtime. For additional information about
LEDs, see chapter 4, Troubleshooting.

On the front of the disk system, a pair of LEDs indicates the status of the disk
system, and an LED for each slot shows disk I/O activity:

■ The system power LED (B in Figure 1) indicates that power is on or off.

■ The system fault LED (C in Figure 1) indi cates whether or not a fault has

■ At the bottom of each disk module, the left LED ( D in Figu re 1) indicates the

■ The right LED, at the bottom of each disk module (E in Figure 1), can be

LEDs (G and J in Figure 2) on the back of the disk system indicate the status of
replaceable components. See chapter 4, Troubleshooting, for specific LED
information.

Power/Standby Switch

Located in the upper right corner of the front of th e disk system, the po wer switch
(A in Figure 1) interrupts power from the power supplies to the LCCs and other
internal components. Power to the power supplies is controlled by the power
cords and the AC source.

Product Description

occurred anywhere in the disk system.

presence of I/O activity on the disk.

flashed to help a customer engineer (CE) locate the disk for physical
inspection or removal.

High Availability

High availability is a general term describing computer systems that are designed
to minimize unplanned downtime. The disk system supports high availability
requirements through the following features:

■ Hot-pluggable, high-capacity, high-speed disks

■ Redundant, hot-pluggable, user-replaceable power supplies and LCCs

■ Support for mirrored disks in the HP-UX environment

■ Online firmware upgrades

■ Hardware event monitoring and real-time error reporting

Product Description 15

Upgradability

You can increase disk system storage capacity by:

■ Replacing disk drives with higher-capacity disk drives

■ Adding disks in unused slots

■ Adding another disk system to a FC loop

None of these actions require shutting down the product, but some may require
the use of system utilities to manage file systems.

Disk and LCC firmware is downloadable using the supported tools.

Environmental Services

Environmental services circuitry monitors the following elements:

■ Fan rotation

■ Power supply output

■ Power supply and fan status

■ Disk drive status, including fault conditions

■ LCC status

■ Temperature

■ Self-test results

Each LCC reports the status of all elements in the disk system, even if the LCC
does not have direct access to the element.

16 Product Description

Additionally, the EEPROM on each LCC stores 2 Kbytes of configuration
information and user-defined data, including the manufacturer serial number and
product number.

Components

User-replaceable components enable high availability and easy maintenance.
This section describes the following components:

■ Disks and disk fillers

■ LCCs

■ Power supply/fan modules

Disks and Disk Fill ers

Disks, shown in Figure 3, are 3.5-inch Low Profile disks in open metal carriers.
Disks are Fibre Channel.

The open carrier design requires careful handling to avoid disk damage by
breakage and static electricity. Avoid personal contact with hot surfaces.

WARNING Touching exposed circuits can cause electrical discharge and

The plastic parts of the disk are safe to touch:

■ Extraction handle (A in Figure 3)

■ Latch tab (B in Figure 3)

The initial disk options for this product are 73-Gbyte, 36-GByte and 18-GByte
drives. A label on the disk carrier s hows the stor age capacity and r otational s peed
of the installed disk. Obtain information about the latest disk option s from HP
sales representatives.

Product Description

disable the disk. Disks require careful handling and ESD
precautions.

Disk fillers occupy unused slots to balance the air flow.

Caution Fillers must be installed in unused slots in order to maintain even

cooling around the remaining slots.

Product Description 17

Figure 4. LCC

Product Description

Other features of the LCC are:

■ LEDs (D) indicating LCC status and bus configuration

■ Rotary switch (E)

■ Configuration switch with four settings:

1 Link Speed (1.0625 Gb/s or 2.125 Gb/s)
2 Reserved
3 Reserved
4 Power fail warning (enable/disable)

■ Locking s crews (F)

■ Cam levers (G)

Product Description 19

LCC circuitry provides the following functions:

■ System fault detection

■ Disk address generation

Caution If an LCC fails, do not remove it from the disk system until you

are ready to replace it with a new one. The failed LCC should
remain installed to assure proper coo ling for the disk system.

20 Product Description

Power Supply/Fan Module

Redundant, hot-pluggable 340-watt power supplies convert wide-ranging AC
voltage from an external main to stable DC output and deliver it to the midplane.
Each power supply has an internal fan, an AC receptacle (A in Figure 5), two
ejector handles (D) with thumbscrews (C), and 2 LEDs (B). Internal control
prevents the rear DC output connector from becoming ener gi zed when the power
supply is removed from the disk system.

Figure 5. Power Su ppl y/F a n Modu le

Product Description

Product Description 21

Power supplies share the load reciprocally; that is, each supply automatically
increases its output to compensate for reduced output from the other, and vice
versa. If one power supply fails, the other delivers the entire load.

Internal circuitry triggers a fault when the internal fan or other part fails. At the
same time, the power fault LED (amber) illuminates, and, if enabled, the
hardware event monitor sends an event message. The power supply fan remains
on if other parts fail in order to maintain cooling air flow through the system. If
the fan fails, the power supply shuts down. The fan in the other working power
supply will increase to full speed to compensate for the failed fan. The failed
power supply/fan module must be removed and the replacement power supply/
fan module installed within two minutes. In the event of a failure, if a
replacement fan module/power supply is not available, leave the failed power
supply/fan module installed until you are ready to replace it. This should be done
to maintain proper cooling for the disk system.

Internal circuitry senses fan motion and triggers a fault when the speed of the
power supply’s internal fan falls below a critical level. At the same time, the LED
turns amber, an d, if en abled, the hardware event monitor sends an event message.

22 Product Description

Hardware/Software Requirements

The disk system is supported on the following operating systems:

■ HP-UX 11.00 with HWE 0302 or greater

■ HP-UX 11.11 with HWE 0302 or greater

For supported servers, see the latest HP 9000 Configuration and Ordering Guide.
One of the following Fibre Channel HBAs must be installed in the host:

■ A5158A, 1 Gb PCI Fibre Channel HBA

■ A6684A, 1 Gb HSC Fibre Channel HBA

■ A6685A, 1 Gb HSC Fibre Channel HBA

■ A6795A, 2 Gb PCI FIbre Channel HBA

Topologies

The disk system supports high availability through redundan t comp onent s an d
redundant connections to redundant hosts. Each port on a LCC can be connected
to a different host bus adapter in the same or different hosts. Mirroring inside a
disk system is not a high availability solution to the extent that a midplane failure
would necessitate downtime.

Product Description

Basic high availability topologies are described on the following pages. For
information about specific supported topologies, consult an HP sales
representative.

Product Description 23

Single Host Basic Configuration

The maximum number of disk systems supported on a Fibre Channel Arbitrated
Loop (FC-AL) is seven. The maximum storage capacity with this configuration
is approximately 7.5 Terabytes (105 disk modules at the 73 Gbyte capacity
point). This configuration does not provide any redundancy to the data path,
however there is some hardware redundancy provided by the enclosures
themselves (power supplies). With the utilization of Mirror/UX software, one or
more mirrors can be created on th e har dware path to p rov ide a basic level of data
protection.

The performance of this co nfigu ration depends on the n umber of d isk sy stems on
the loop. Using the maximum supported number of disk systems reduces the
performance of the loop. To get the maximum performance (200 MB/s or
maximum number of I/Os), the number of disk systems should be limited to four.

24 Product Description

Single Host PV Links Configuration

Data path redundancy can be achieved with the configuration shown in Figure .
Using an additional host bus adapter and the LVM software, pvlinks can be
created to provide a redundant path to data. A separate mirror path can be created
for data protection, also. This configuration protects against any single
component failure (cables, HBAs, disks). Like the single host basic
configuration, each loop is capable of 200 MB/s which translates to 40 0 MB/s for
this configuration.

Product Description

Product Description 25

Two Host High Availability Configuration

Figure 8 shows a basic high availability configuration. Each disk system can still
be configured using pvlinks and mirroring. High availability software protects
against a disk system failure. A failure in a cable or LCC will result in a loop
failure. Adding FC-AL loops or switches makes this configuration more robust.

26 Product Description

Four Host Hub Configuration

The disk system can run at 2 Gb/s speed. For legacy systems a four host
configuration could be used for an advanced high availability environment at 1
Gb/s speed. See Figure 9, below.

The performance of this configur ation i s limit ed to a ma ximum of 20 0MB/s (10 0
MB/s per loop). The performance issues discussed with the single initiator basic
configuration also apply with this configuration .

Product Description

Product Description 27

Definitions

The following terms have specific meanings in the context of this guide:

High availability (HA)

HA describes hardware and software systems that are designed to minimize
planned and unplanned downtime. High availability is measured at the system
level and stated as the percentage of time the system is in a state to do useful
work; for example, 99.95% availability translates to four hours of downtime per
year.

Hot-pluggable

Hot-pluggable signifies the ability of a component to be installed or replaced
without interrupting storage operations and within the restrictions of the
operating environment. All customer -replaceable disk s ystem components can be
replaced under power. Adding or replacing disks o r LCCs may requ ir e the u se of
HP-UX commands to manage file systems.

JBOD

Pronounced jay-bod, a JBOD (Just a Bunch Of Disks) is an enclosed group of
disks that are addressed individually by the host.

PDU and PDRU

PDUs (power distribution units) distribute power from a sing le inlet to multiple
outlets. PRUs (power relay units) connect one or more PDU inlets to a single on/
off switch, such as a cabinet power switch. Units that both distribute and switch
power are referred to as PDRUs.

28 Product Description

Short Wave

Lasers or LEDs that emi t light with wavelen gths around 780 nm or 850 nm . Short
wave lasers are used for Fibre Channel links up to approximately 700 m. They
are typically used with multimode fiber. The preferred fiber core size is 50
microns since this fiber has large bandwidth so the distance is limited by fiber
attenuation. A 62.5 micron core size is also supported for compatibility with
existing FDDI installations. Fiber of this type has smaller bandwidth and, in this
case, the distance is limited by fiber bandwidth.

Multimode

A type of fiber optic cable that allows more than one mode (rays of light) to be
guided.

Arbitrated Loop (FC-AL)

A Fibre Channel topology that provides a low-cost solution to attach multiple
communicating ports in a loop without hubs and switches.

Arbitrated Loop Physical Address (AL_PA)

A unique one-byte valid value assigned during Loop Initialization to each
NL_Port or FL_Port on a Loop.

Product Description

Product Description 29

30 Product Description