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Dell EqualLogic PS5000 Hardware Maintenance

Storage arrays
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  • Page 1 PS5000 Hardware Maintenance...
  • Page 2 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.

  • Page 3: Table Of Contents

    Table of Contents Preface ........................v Audience ......................v Organization ....................v Conventions ....................vi Documentation ....................vi Technical Support and Customer Service .............vii Warranty Information .................. viii 1 Basic Storage Array Information..............1-1 Array Front and Back Panels................ 1-1 Interpreting Operations Panel LEDs ............1-2 Using an Electrostatic Wrist Strap ...............
  • Page 4 PS5000 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...

  • Page 5: Preface

    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 self- managing, iSCSI storage area network (SAN) that is affordable and easy to use, regardless of scale.

  • Page 6: Conventions

    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.

  • Page 7: Technical Support And Customer Service

    Technical Support and Customer Service Dell's support service is available to answer your questions about PS Series arrays. If you have an Express Service Code, have it ready when you call. The code helps Dell's automated-support telephone system direct your call more efficiently.

  • Page 8: Warranty Information

    PS5000 Hardware Maintenance Preface Online Services You can learn about Dell products and services on the following websites: • www.dell.com/ • (Asian/Pacific countries only) www.dell.com/ap/ • (Japan only) www.dell.com/jp • (Europe only) www.euro.dell.com • (Latin American countries) www.dell.com/la • (Canada only) www.dell.ca...

  • Page 9: Basic Storage Array Information

    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 •...

  • Page 10: Interpreting Operations Panel Leds

    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.
  • Page 11 PS5000 Hardware Maintenance Basic Array Information Table 1-1: Operations Panel LED Descriptions (Continued) Operations LED Color Description Warning condition No power or normal condition. (lower left) Flashing One or more of the following has occurred: orange • RAID set is degraded but still functioning. •...

  • Page 12: Using An Electrostatic Wrist Strap

    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...
  • Page 13 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 account.

  • Page 15: Maintaining Disks

    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 •...

  • Page 16: Disk Handling Requirements

    PS5000 Hardware Maintenance Maintaining Disks Table 2-1: Disk LED Descriptions Disk LEDs Color Description No power or error condition. Green Power. Flashing green Disk activity. Bottom No power or normal condition. Error condition. Disk Handling Requirements You must adhere to the following disk handling requirements: •...

  • Page 17: Identifying Failed Disks

    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.
  • Page 18 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. Figure 2-3: Removing a Disk 2–4...

  • Page 19: Installing Disks

    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;...
  • Page 20 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.

  • Page 21: Maintaining Control Modules

    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. Control module maintenance topics include: • Supported Control Modules on page 3-1 • Control Module Handling Requirements on page 3-3 •...

  • Page 22: Interpreting Control Module Leds

    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.

  • Page 23: Control Module Handling Requirements

    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.

  • Page 24: Maintaining Control Module Firmware

    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: •...

  • Page 25: Network Configuration Recommendations

    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. Table 3-3: Network Recommendations Recommendation Description Switched Gigabit...

  • Page 26: Connecting Network Cables

    PS5000 Hardware Maintenance Maintaining Control Modules Table 3-3: Network Recommendations (Continued) Recommendation Description Unicast storm Disable unicast storm control on each switch that handles iSCSI control disabled on traffic, if the switch provides this feature. However, the use of switches broadcast and multicast storm control is encouraged on switches.
  • Page 27 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).

  • Page 28: Removing A Control Module

    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.
  • Page 29 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.

  • Page 30: Installing A Control Module

    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.
  • Page 31 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.

  • Page 32: Replacing The Compact Flash Card

    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.
  • Page 33 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.

  • Page 35: Maintaining Power Supply And Cooling Modules

    4 Maintaining Power Supply and Cooling Modules A PS5000 array includes two hot-swappable, combination power supply and cooling modules. Maintenance topics include: • Interpreting Power Supply and Cooling Module LEDs on page 4-1 • Identifying Power Supply and Cooling Module Failures on page 4-2 •...

  • Page 36: Identifying Power Supply And Cooling Module Failures

    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.
  • Page 37 PS5000 Hardware Maintenance Maintaining Power Supply and Cooling Modules Figure 4-2: Removing a Power Supply and Cooling Module 4–3...
  • Page 38 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.
  • Page 39 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.
  • Page 41 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 77.6 pounds or 35 kilograms Operating temperature 41 to 95 degrees F / 5 to 35 degrees C Storage temperature -22 to 140 degrees F / -30 to 60 degrees C Maximum operating altitude...
  • Page 43 Index compact flash card firmware requirements array identifying firmware back panel 3-9, 3-10, 3-12 moving batteries 3-4, 3-12 replacing 3-10 control module restriction control modules control modules cooling batteries 3-12 disk types charging cache battery 3-11 disks checking proper installation 3-9, environmental requirements compact flash card moving...
  • Page 44 PS5000 Hardware Maintenance Index firmware identifying disks 3-4, 3-12 requirements control module support failure behavior Flow Control recommendation failure indications handling requirements Gigabit Ethernet recommendation identifying type installing in array LEDs hosts locating Flow Control recommendation protecting Jumbo Frames recommendation removing from array SATA types...
  • Page 45 PS5000 Hardware Maintenance Index minimum configuration firmware recommendations network physical network interfaces power configuring power cables connecting LEDs SAS disks 2-2, 2-5 control module restriction operations panel identifying LEDs supported control module servicing SATA disks 2-2, 2-5 control module restriction physical requirements identifying power cables...

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