PS5000 Hardware Maintenance
Copyright 2008 EqualLogic, Inc. All rights reserved. EqualLogic is a registered trademark. Dell is a trademark of Dell, Inc. All trademarks and registered trademarks mentioned herein are the property of their respective owners. Information in this document is subject to change without notice. Reproduction in any manner whatsoever without the written permission is strictly forbidden.
Table of Contents Preface ..................................................................................................................v Audience ..........................................................................................................v Organization ....................................................................................................v Conventions ....................................................................................................vi Documentation .........
PS5000 Hardware Maintenance Table of Contents Installing a Power Supply and Cooling Module .......................................... 4-4 A Environmental, Power, and Other Specifications......................................A-1 Index............................................................................................................
Preface This manual describes how to maintain the hardware for PS5000 storage arrays. Each array contains hot-swappable power supply and cooling modules, eight or 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.
PS5000 Hardware Maintenance • Preface Appendix A, Environmental, Power, and Other Specifications, describes the specifications for a PS5000 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.
PS5000 Hardware Maintenance Preface documentation CD-ROM that is shipped with the product, along with the Group Administration and CLI Reference manuals and the Group Manager online help. Documentation for Host Integration Tools for Microsoft® Windows® systems is located on the Host Integration Tools CD-ROM that is shipped with the product. Localized documentation is available on the localization CD-ROM that is shipped with the product in certain countries.
PS5000 Hardware Maintenance Preface Online Services You can learn about Dell products and services on the following websites: • www.dell.com/ • www.dell.com/ap/ (Asian/Pacific countries only) • www.dell.com/jp (Japan only) • www.euro.dell.com (Europe only) • www.dell.com/la (Latin American countries) • www.dell.ca (Canada only) You can access Dell Support through the following websites: • support.dell.com • support.dell.com/EqualLogic • support.jp.dell.com (Japan only) • support.euro.
1 Basic Storage Array Information This chapter includes basic information about PS5000 storage 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 PS5000 array are shown below.
PS5000 Hardware Maintenance Basic Array Information Interpreting Operations Panel LEDs The PS5000 operations panel monitors array hardware components. The panel is not redundant, but an array can continue to operate if it fails. See your array support provider for information about servicing the operations panel. Figure 1-3 shows the operations panel LEDs, which can alert you to errors and conditions that require your attention. Table 1-1 describes the LEDs.
PS5000 Hardware Maintenance Basic Array Information Table 1-1: Operations Panel LED Descriptions (Continued) Operations LED Color Description Warning condition (lower left) Off No power or normal condition. Error condition (lower right) Off Flashing One or more of the following has occurred: orange • 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.
PS5000 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 PS5000 array includes redundant, hot-swappable disks, power supplies, and control modules (if a dual control module array).
PS5000 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 grpadmin account. 3. Enter the shutdown command, as shown next. Login: grpadmin Password: xxxxxxx Welcome to Group Manager Copyright 2001 - 2007 EqualLogic, Inc.
2 Maintaining Disks A PS5000 array includes up to 16 hot-swappable disks, either Serial Attached SCSI (SAS) disks or Serial ATA (SATA) disks, depending on the type of control module. Disk maintenance topics include: • Interpreting Disk LEDs on page 2-1 • Disk Handling Requirements on page 2-2 • Identifying Failed Disks on page 2-3 • Removing Disks on page 2-3 • Installing Disks on page 2-5 Disk maintenance topics apply to both SAS and SATA disks.
PS5000 Hardware Maintenance Maintaining Disks Table 2-1: Disk LED Descriptions Disk LEDs Color Description Top Off No power or error condition. Green Power. Flashing green Disk activity. Off No power or normal condition. Red Error condition. Bottom Disk Handling Requirements You must adhere to the following disk handling requirements: • Install only disks compatible with the control module. SAS disks require the Type 4 control module. SATA disks require the Type 5 control module.
PS5000 Hardware Maintenance Maintaining Disks Identifying Failed Disks Disks in a PS5000 array are numbered from 0 to 15 (from left to right, top row to bottom row). A disk failure is indicated by: • The disk’s error LED (bottom) is red, and the power LED (top) is off. See Interpreting Disk LEDs on page 2-1. • A message on the console, in the event log, or in the Group Manager GUI Alarms panel describes a disk failure.
PS5000 Hardware Maintenance Maintaining Disks Figure 2-3 shows how to remove a disk from a PS5000 array. Instructions for removing a blank carrier are similar, except you do not have to wait 30 seconds.
PS5000 Hardware Maintenance Maintaining Disks Installing Disks Before installing a disk or blank carrier in a PS5000 array, attach an electrostatic protection device, as described in Using an Electrostatic Wrist Strap on page 1-4. Notes: Install only disks of the same type, speed, and spin rate in an array. The color of the handle release button indicates the disk type (black for SAS; gray for SATA). SAS disks require the Type 4 control module. SATA disks require the Type 5 control module.
PS5000 Hardware Maintenance Maintaining Disks Figure 2-4: Installing a Disk Verify that the new disk is operational by checking the LEDs on the front panel, as described in Interpreting Disk LEDs on page 2-1. The top LED should be green or flashing green, and the bottom LED should be off. In addition, the GUI Member Disks window and the CLI member select show disks command output should show that the new disk is operational.
3 Maintaining Control Modules A PS5000 array includes one or two hot-swappable control modules. Each control module includes a compact flash card running PS Series firmware.
PS5000 Hardware Maintenance Maintaining Control Modules Note: This manual shows PS5000 arrays with Type 5 control modules installed. The information is also applicable to arrays with Type 4 control modules. See the PS Series Release Notes for the latest supported control modules. Interpreting Control Module LEDs Control modules have LEDs that enable you to determine the status of the control module (active or secondary) and identify problems.
PS5000 Hardware Maintenance Maintaining Control Modules Control Module Handling Requirements You must adhere to the following control module handling requirements: • Protect control modules from electrostatic discharge. Always wear an electrostatic wrist strap when handling a control module, as described in Using an Electrostatic Wrist Strap on page 1-4. When not installed, store a control module in an antistatic bag or place it on a surface protected from electrostatic discharge.
PS5000 Hardware Maintenance Maintaining Control Modules connected to the port on the active control module. Therefore, you should connect a cable to the network interface port on each control module to ensure that both control modules can access an interface. A PS5000 array provides two types of network failure protection: • Network connection failover.
PS5000 Hardware Maintenance Maintaining Control Modules Network Configuration Recommendations It is recommended that you follow the guidelines in the table shown next. In addition, all the usual rules for proper network configuration apply to group members. General network configuration is beyond the scope of this manual.
PS5000 Hardware Maintenance Maintaining Control Modules Table 3-3: Network Recommendations (Continued) Recommendation Description Unicast storm control disabled on switches Disable unicast storm control on each switch that handles iSCSI traffic, if the switch provides this feature. However, the use of broadcast and multicast storm control is encouraged on switches.
PS5000 Hardware Maintenance Maintaining Control Modules Figure 3-2: Recommended Single Control Module Configuration For a dual control module array, the minimum network configuration is a network connection to Ethernet 0 on both control modules. Although this configuration protects against control module failover, it is still a potential point of failure (for example, if the network cable connected to the active control module is disconnected).
PS5000 Hardware Maintenance Maintaining Control Modules Figure 3-4 shows the recommended network configuration for a dual control module PS5000 array. This configuration provides the highest network availability and the maximum network bandwidth. Figure 3-4: Recommended Dual Control Module Configuration Removing a Control Module If a control module fails, you should remove it and replace it with a functioning control module.
PS5000 Hardware Maintenance • Maintaining Control Modules Disconnect any serial or network cables attached to the control module. If you have a dual control module array, you may want to re-attach the network cables to the functioning control module to ensure uninterrupted data access. To remove a control module, follow the instructions in Figure 3-5.
PS5000 Hardware Maintenance Maintaining Control Modules Once you remove a control module, place it on a surface that is protected from electrostatic charge. If the array will permanently operate with only one control module, you must install a blank control module in the empty slot. You can order a blank from your array support provider. For proper cooling, do not leave a control module slot empty.
PS5000 Hardware Maintenance Maintaining Control Modules Figure 3-6: Installing a Control Module After installing a control module, connect network cables to the control module, as described in Connecting Network Cables on page 3-6. Then, if the array was shut down, turn on power to the array. Check the LEDs, as described in Interpreting Control Module LEDs on page 3-2. Also, check the GUI Member Controllers window or invoke the CLI member select show controllers command.
PS5000 Hardware Maintenance Maintaining Control Modules Note: Once connected, a control module cache battery may begin to charge. If you have a dual control module array and the low-battery-safe cache policy is enabled (the default), the array will operate in write-through mode until the cache battery is fully charged.
PS5000 Hardware Maintenance • Maintaining Control Modules You can access the compact flash card by sliding the control module partially from the slot. If you completely remove the control module, place it on a surface that is protected from electrostatic discharge. Figure 3-7 on page 3-13 shows how to remove a compact flash card from a control module and also how to install a card.
4 Maintaining Power Supply and Cooling Modules A PS5000 array includes two hot-swappable, combination power supply and cooling modules.
PS5000 Hardware Maintenance Maintaining Power Supply and Cooling Modules Identifying Power Supply and Cooling Module Failures A power supply and cooling module failure can be indicated by the following: • A power supply and cooling module LED is orange. See Interpreting Power Supply and Cooling Module LEDs on page 4-1. • Message on the console, in the event log, or in the Group Manager GUI Alarms panel describes a power supply and cooling module failure.
PS5000 Hardware Maintenance Maintaining Power Supply and Cooling Modules Figure 4-2: Removing a Power Supply and Cooling Module 4–3
PS5000 Hardware Maintenance Maintaining Power Supply and Cooling Modules Installing a Power Supply and Cooling Module To install a power supply and cooling module in an array, refer to Figure 4-3. Figure 4-3: Installing a Power Supply and Cooling Module If your PS Series array was shipped with a power cable, use this cable to meet safety requirements. Be sure to use the cable strain relief to secure the power cable to the array, as shown in Figure 4-4.
PS5000 Hardware Maintenance Maintaining Power Supply and Cooling Modules Figure 4-4: Using the Cable Strain Relief Turn on power to the power supply and cooling module (press –). Initialization generally can take from one to ten seconds. Completion is indicated by the green power LED and event log messages stating that fans have returned to their normal speed. To ensure that the new module is operational, check that there are no red LEDs.
A Environmental, Power, and Other Specifications Table A-2 describes the environmental, power, and physical specifications for a PS5000 array. Table A-2: PS5000 Array Specifications Component Requirement Weight of fully-loaded array 77.
Index A array back panel 1-1 batteries 3-1 control module restriction 3-10 control modules 3-1 cooling 4-1 disk types 2-1 disks 2-1 environmental requirements A-1 failure indications 1-2 fans 4-1 firmware 3-4 front panel 1-1 LEDs 1-2, 2-1, 3-2, 4-1 maximum network availability 3-8 maximum network bandwidth 3-6, 3-8 minimum network configuration 3-6 network connection guidelines 3-5 power supplies 4-1 protecting from discharge 1-4 shutdown procedure 1-4 specifications A-1 B batteries charging 3-12 servi
PS5000 Hardware Maintenance D disks control module support 2-1 failure behavior 2-3 failure indications 2-3 handling requirements 2-2 identifying type 2-1 installing in array 2-5 LEDs 2-1 locating 2-3 protecting 2-2 removing from array 2-3 SAS 2-1 SATA 2-1 types 2-1 verifying operational status 2-6 E electrostatic protection, using 1-4 environmental requirements A-1 F failover control module 3-3, 3-4 network connection 3-4 failure indications array 1-2 control modules 3-3 cooling 4-2 disks 2-3 power 4-2
PS5000 Hardware Maintenance minimum configuration 3-6 recommendations 3-5 network interfaces configuring 3-5 connecting 3-6 LEDs 3-2 O operations panel LEDs 1-2 servicing 1-2 P physical requirements A-1 power cables restriction 4-4 using strain relief 4-4 power supplies cable strain relief 4-5 indications of failure 4-2 initialization 4-2 installing module in array 4-4 LEDs 4-1 locating modules 4-2 maintaining 4-1 removing module from array 4-2 verifying operational status 4-5 R requirements array handl
