Dell EqualLogic PS3065X User Manual

Hardware Maintenance

May 2007

EqualLogic is a registered trademark of EqualLogic, Inc.

All trademarks and registered trademarks mentioned herein are the property of their respective owners.

Possession, use, or copying of the documentation or the software described in this publication is authorized only under the license agreement.

EqualLogic, Inc. will not be held liable for technical or editorial errors or omissions contained herein. Information in this document is subject to change.

Part Number: 110-0041-R3

Table of Contents

Preface ..................................................................................................................v

Audience ..........................................................................................................v

Organization ....................................................................................................v

Conventions ....................................................................................................vi

Documentation and Technical Support ..........................................................vi

Warranty Information ....................................................................................vii

Restricted Access Requirement .....................................................................vii

Regulatory Agency Notices ........................................................................ .viii

1 Basic Array Information............................................................................... 1-1

Array Front and Back Panels........................................................................ 1 -1

Interpreting Operations Panel LEDs ............................................................ 1-2

Using an Electrostatic Wrist Strap ............................................................... 1-4

Shutting Down and Restarting an Array ...................................................... 1-4

2 Maintaining Disks.......................................................................................... 2-1

Interpreting Disk LEDs................................................................................ 2-1

Disk Handling Requirements ....................................................................... 2-2

Identifying Failed Disks................................................... ..... .... ..... .............. 2-3

Removing Disks........................................................................................... 2-3

Installing Disks.............................................................................................2-5

3 Maintaining Control Modules...................................................................... 3-1

Supported Control Modules ......................................................................... 3-1

Interpreting Control Module LEDs.............................................................. 3-2

Control Module Handling Requirements..................................................... 3-3

Identifying Control Module Failures............................................................ 3-3

Understanding Failover Behavior ................................................................ 3-3

Maintaining Control Module Firmware....................................................... 3-4

Connecting Network Cables......................................................................... 3-5

Removing a Control Module........................................................................ 3-7

Installing a Control Module ......................................................................... 3-9

Replacing the Compact Flash Card............................................................ 3-11

4 Maintaining Power Supply and Cooling Modules...................................... 4-1

Interpreting Power Supply and Cooling Module LEDs............................... 4-1

Identifying Power Supply and Cooling Module Failures............................. 4-2

Removing a Power Supply and Cooling Module......................................... 4-2

iii

PS3000 Series Hardware Maintenance Table of Contents

Installing a Power Supply and Cooling Module .......................................... 4-4

A Environmental, Power, and Other Specifications......................................A-1

Index............................................................................................................Index-1

Preface

This manual describes how to maintain the hardware for PS3000 Series arrays from EqualLogic. Each array contains hot-swappable power supply and cooling modules, up to sixteen RAID-protected disks, and single or dual hot-swappable control modules.

With one or more PS Series arrays, you can create a PS Series group—a selfmanaging, iSCSI storage area network (SAN) that is affordable and easy to use, regardless of scale. To install hardware, see the PS3000 Series QuickStart.

Audience

This manual is designed for the administrators responsible for maintaining PS3000 Series hardware. Administrators are not required to have extensive network or storage system experience. However, it may be useful to understand:

• Basic networking concepts

• Current network environment

• User disk storage requirements

• RAID configurations

• Disk storage management Note: Although this manual provides examples of using PS Series arrays in some

common network configurations, detailed information about setting up a network is beyond its scope.

Organization

This manual is organized as follows:

• Chapter 1, Basic Array Information, describes the PS3000 Series array front and back panels, how to interpret LEDs, how to use an electrostatic wrist strap, and how to shut down and restart an array.

• Chapter 2, Maintaining Disks, describes how to install and remove disks.

• Chapter 3, Maintaining Control Modules, describes how to install and maintain control modules and replace the compact flash card. It also describes the best way to connect network cables to control modules for high performance and availability.

PS3000 Series Hardware Maintenance Preface

• Chapter 4, Maintaining Power Supply and Cooling Modules, describes how to install and remove one of the modules that provides both power and cooling.

• Appendix A, Environmental, Power, and Other Specifications, describes the specifications for a PS3000 Series array.

Conventions

Conventions used in the manual are shown in the following table.

Convention Usage

When displayed, indicates that you must attach an electrostatic wrist strap to your wrist and a grounded device to prevent electrostatic discharge.

When displayed, indicates a potential personal injury hazard.

Documentation and Technical Support

For detailed information about PS Series storage arrays, groups, and volumes, see the following documentation:

• Release Notes. Provides the latest information about PS Series storage arrays.

• QuickStart. Describes how to set up the storage array hardware and create a PS Series group. Be sure to use the manual for your array model.

• Group Administration. Describes how to use the Group Manager graphical user interface (GUI) to manage a PS Series group. This manual provides comprehensive information about product concepts and procedures.

• CLI Reference. Describes how to use the Group Manager command line interface (CLI) to manage a PS Series group and individual arrays.

• Hardware Maintenance. Provides information about maintaining the storage array hardware. Be sure to use the manual for your array model.

PS3000 Series Hardware Maintenance Preface

• Online help. In the GUI, expand Tools in the far left panel and then click

Online Help for help on both the GUI and the CLI. See Obtaining Online

Help on page 2-16.

The QuickStart and Hardware Maintenance manuals are printed and shipped with the product. They are also located on the PS Series documentation CD-ROM that is shipped with the product, along with the Group Administration and CLI Reference manuals and the Group Manager online help.

In addition, the Host Integration Tools for Microsoft

Windows® systems are

available on the Host Integration Tools CD-ROM that is shipped with the product. Technical support on EqualLogic products is available for customers with arrays

under warranty and customers with a valid support contract. To obtain support:

• Visit the EqualLogic Customer Support website to download the latest documentation and firmware. Go to

www.equallogic.com and log in to

your support account. If you do not have an account, register for an account.

• From the Customer Support website, you can submit a service request.

• In the United States, call toll-free 877-887-7337. Outside the United States, call +1 919-767-5729. If the issue is urgent, ask to speak with a member of the EqualLogic Customer Support team.

Warranty Information

The PS3000 Series array warranty is included in the shipping box. For information about registering a warranty, visit the EqualLogic website,

www.equallogic.com.

Restricted Access Requirement

PS Series arrays must be installed in a restricted access location. A restricted access location is an area that is intended only for qualified or trained personnel.

vii

PS3000 Series Hardware Maintenance Preface

Regulatory Agency Notices

PS Series arrays have been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules and other international standards. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, which the user will be required to correct at his or her own expense.

Regulatory Agency Notes

Service Note

Disconnect all PS Series storage array power cables before servicing to avoid electric shock.

There is a danger of explosion if a PS Series storage array control module cache battery is incorrectly replaced. Replace a battery only with the same or equivalent battery, as recommended by the manufacturer, and use the instructions in this document. Discard used batteries according to the manufacturer’s instructions.

viii

1 Basic Array Information

This chapter includes basic information about PS3000 Series arrays:

• Array Front and Back Panels on page 1-1

• Interpreting Operations Panel LEDs on page 1-2

• Using an Electrostatic Wrist Strap on page 1-4

• Shutting Down and Restarting an Array on page 1-4

Array Front and Back Panels

The front and back panels of a PS3000 Series array are shown below.

Figure 1-1: PS3000 Series Front Panel

Figure 1-2: PS3000 Series Back Panel

1–1

PS3000 Series Hardware Maintenance Basic Array Information

Interpreting Operations Panel LEDs

The operations panel is used to monitor PS3000 Series hardware components. The panel is not redundant, but an array can continue to operate if it fails. See your PS Series array service provider for information about servicing the panel.

Figure 1-3 and Table 1-1 describe the LEDs on the PS3000 Series array operations panel, which can alert you to errors and conditions that require your attention. Serious problems should be reported to your PS Series service provider.

For information about other LEDs, see Interpreting Disk LEDs on page 2-1,

Interpreting Control Module LEDs on page 3-2, and Interpreting Power Supply and Cooling Module LEDs on page 4-1.

Figure 1-3: Operations Panel LEDs

Table 1-1: Operations Panel LED Descriptions

Operations LED Color Description

Power (upper right) Off No power.

Green Power.

Array locator (upper left) Off No power or normal condition.

Flashing orange

1–2

Administrator enabled the array locator function.

PS3000 Series Hardware Maintenance Basic Array Information

Table 1-1: Operations Panel LED Descriptions (Continued)

Operations LED Color Description

Warning condition (lower left)

Error condition (lower right)

Off No power or normal condition. Flashing

orange

Off No power or normal condition. Flashing

orange

One or more of the following has occurred:

• RAID set is degraded but still functioning.

• RAID set (volume level) has lost blocks.

• Component temperature is near a limit.

• Fan failed or fan RPMs exceed limit.

• Power supply is not installed or has no power.

• Only one control module installed or control module has failed over.

• Control module has insufficient RAM.

• Syncing active and secondary control modules.

• No communication between control modules.

• Installed spare disk does not have enough capacity to replace a disk in a RAID set.

• A non-critical hardware component failed.

• Real-time clock battery is low.

One or more of the following has occurred:

• RAID is not functioning.

• Lost block table is full.

• Temperature exceeds upper or lower limit.

• Control module cache has lost data.

• A cooling module is not installed.

• Both fans on a cooling module have failed.

• Cache battery has less than 72 hours charge or temperature is too high to charge battery.

• NVRAM coin cell battery failed.

• Cache contains data that does not belong to any of the installed disks.

• More than one valid RAID set exists in array.

• Control modules are different models.

• A critical hardware component has failed.

• Operations panel failed or not installed.

• Storage enclosure processor that monitors array components has experienced a failure.

1–3

PS3000 Series Hardware Maintenance Basic Array Information

Using an Electrostatic Wrist Strap

When handling the array chassis, disks, or control modules, you must use an electrostatic protection device to prevent electrostatic discharge.

An electrostatic wrist strap is included in the shipping box.

Figure 1-4: Using an Electrostatic Wrist Strap

Shutting Down and Restarting an Array

A PS3000 Series array includes redundant, hot-swappable disks, power supplies, and control modules (if a dual control module array). Y ou can remove a redundant component without affecting operation if a functioning component is available. Otherwise, it is recommended that you cleanly shut down the array and turn off power before removing a component.

Note: When an array is shut down, any volumes with data on the array will be set

offline until the array is successfully restarted. This may affect initiators that are connected to the volumes.

To shut down an array, follow these steps:

1. Do one of the following:

• Use telnet or SSH to connect to a functioning IP address assigned to a network interface on the array. Do not connect to the group IP address.

• Use the null modem cable shipped with the array to connect Serial Port 0 on the active control module (ACT LED is green) to a console or a computer running a terminal emulator.

1–4

PS3000 Series Hardware Maintenance Basic Array Information

Serial line characteristics are as follows:

- 9600 baud

-One STOP bit

- No parity

- 8 data bits

- No hardware flow control

2. Log in to an account with read-write access, such as the

3. Enter the

> shutdown

shutdown command, as shown next.

Welcome to Group Manager

grpadmin account.

If you are using a serial connection to shut down an array, it is safe to turn off power when the “press any key” message appears. (Pressing any key will restart both control modules.)

If you are using a network connection, the session will be disconnected before the array is fully shut down. Confirm that the ACT LED on each control module is off (not lit) before turning off power to the array.

After performing array maintenance, you can turn on power to the array . When the array restart completes, the member and volumes will be set online.

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