Page 1 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure Installation, User’s and Maintenance Guide GC27-2050-02...
Page 3 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure Installation, User’s and Maintenance Guide GC27-2050-02...
Page 4 Before using this information and the product it supports, be sure to read the general information in “Notices” on page 137. Third Edition (December 2007) © Copyright International Business Machines Corporation 2006, 2007. All rights reserved. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
Page 6 Restoring power after an unexpected shutdown ... . 67 Recovering from an overheated power supply and fan unit ..68 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 7 Chapter 5. Installing and replacing devices ... . . 73 Handling static-sensitive devices ....73 Service Action Allowed Status LED .
Page 8 Index ......153 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 10 54. Rear rack mounting template ......115 viii IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 11: Tables
27. Hard disk drive record ......112 28. IBM power cords ......117 29.
Page 12 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 13: Safety
Safety The caution and danger statements that this document contains can be referenced ® in the multilingual IBM Safety Information document that is provided with your IBM ™ System Storage EXP420 storage expansion enclosure. Each caution and danger statement is numbered for easy reference to the corresponding statements in the translated document.
Page 14 3. Attach signal cables to connectors. 3. Remove signal cables from connectors. 4. Attach power cords to outlet. 4. Remove all cables from devices. 5. Turn device ON. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 15 Statement 3: CAUTION: When laser products (such as CD-ROMs, DVD drives, fibre optic devices, or transmitters) are installed, note the following: v Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device.
Page 16 To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 17 Statement 8: CAUTION: Never remove the cover on a power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components.
Page 18 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 19: About This Document
Fibre Channel and network technology. How this document is organized Chapter 1, “Introduction,” on page 1 describes the IBM System Storage EXP420 storage expansion enclosure. This chapter includes an inventory checklist and an overview of the storage expansion enclosure features, operating specifications, and components.
Page 20: Ds4000 Storage Subsystem Installation Tasks - General Overview
DS4400 and DS4500 Rack Mounting Instructions v DS4300 Rack Mounting Instructions v DS4200 Express Storage Subsystem Installation, User’s, and Maintenance Guide v DS4100 Storage Subsystem Installation, User’s and Maintenance Guide xviii IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 21 DS4000 EXP810 Storage Expansion Enclosures Installation, User’s, and Maintenance Guide v FAStT EXP500 Installation and User’s Guide v IBM System Storage Quick Start Guide, Quick reference for the DS4700 and DS4200, Sections 2, 3, and 4 also for installing the EXP810 and EXP420 Route the storage v DS4100 Storage Subsystem Installation, User’s, and...
Page 22 Server, and Linux v DS4000 Storage Manager Copy Services Guide (describes switch zoning for the Remote Mirror Option) v See also the documentation provided by the switch manufacturer. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 23 Guide for Windows 2000/Server 2003/2008, NetWare, Install host software VMWare ESX Server, and Linux (failover drivers) on v IBM System Storage Quick Start Guide, Quick reference for host server the DS4700 and DS4200, Sections 2, 3, and 4 also for installing the EXP810 and EXP420...
Page 24: Getting Information, Help, And Service
If you need help, service, or technical assistance or just want more information about IBM products, you will find a wide variety of sources available from IBM to assist you. This section contains information about where to go for additional information about IBM and IBM products, what to do if you experience a problem with your system, and whom to call for service, if it is necessary.
Page 25: Finding Ds4000 Readme Files
Find information about all IBM System Storage products: www.storage.ibm.com Support for IBM System Storage disk storage systems Find links to support pages for all IBM System Storage disk storage systems, including DS4000 storage subsystems and expansion units: www.ibm.com/systems/support/storage/disk System Storage DS4000 interoperability matrix...
Page 26: Software Service And Support
For information about which products are supported by Support Line in your country or region, go to the following Web site: www.ibm.com/services/sl/products For more information about the IBM Support Line and other IBM services, go to the following Web sites: v www.ibm.com/services v www.ibm.com/planetwide...
Page 27: Fire Suppression Systems
Because IBM does not test any equipment for compatibility with fire suppression systems, IBM does not make compatibility claims of any kind nor does IBM provide recommendations on fire suppression systems.
Page 28 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 29: Chapter 1. Introduction
Overview The IBM System Storage DS4000 EXP420 storage expansion enclosure (Machine Type 1812, Models 8VA and 8VH) provides high-capacity, SATA disk interface storage. The storage expansion enclosure delivers fast, high-volume data transfer, retrieval, and storage functions for multiple drives to multiple hosts.
Page 30: Operating System Support
Box ID labels (used to label the enclosure IDs on the front of the EXP420) A rack mounting template and instructions for installing the support rails and the storage expansion enclosure are provided in “Installing the support rails” on page IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 31: Exp420 Components
To connect your EXP420 to DS4000 storage subsystems (such as the DS4200 Express) or other EXP420 storage expansion enclosures, IBM LC-LC fibre-channel cables are required. Two additional IBM 4 Gbps SFP modules are required to connect the EXP420 to more than one DS4000 storage expansion enclosure as part of a multiple DS4000 storage expansion enclosure and storage subsystem configuration.
Page 32: Environmental Service Modules (Esms)
LEDs. Each ESM has four SFP module ports that you could use to connect the storage expansion enclosure to the controller. However, only the two ESM SFP IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 33: Connectors, Switch, And Enclosure Id
ports (labeled 1A and 1B) near the center of the storage expansion enclosure are used. The SFP ports labeled 2A and 2B are reserved for future use. The EXP420 ESMs support automatic ESM firmware synchronization. This function allows a new ESM with a different level of ESM firmware to be automatically synchronized with the ESM firmware version in the existing ESM in the EXP420 chassis.
Page 34: Rear Drive Channel Ports
CRU from the EXP420 chassis until you are ready to replace it with a new CRU. Figure 4 on page 7 shows power supply and fan unit components. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 35: Power Supply And Fan Unit Components
Note: Although both power supply and fan units (left and right) are identical, they are seated in the EXP420 chassis in opposite orientations. If the power supply and fan unit cannot fully be inserted in the power supply and fan unit bay, flip it 180 degree and reinsert it.
Page 36: Small Form-Factor Pluggable (Sfp) Modules
2-Gbps SFP that is plugged into a 4-Gbps-capable port will limit the speed of that port to a maximum of 2 Gbps. Carefully check the SFP’s IBM part number, option number, and FRU part number to identify its speed. There are no physical features that distinguish a 4 Gbps from a 2 Gbps SFP.
Page 37: Software And Hardware Compatibility And Upgrades
CRUs firmware must be installed to ensure optimal functionality, manageability, and reliability. Unless stated otherwise, you can find the latest DS4000 publications, firmware, and host software at the IBM DS4000 System Storage Support Web site: www.ibm.com/servers/storage/support/disk/ Software and firmware support code upgrades...
Page 38: Exp420 Hardware And Software Compatibility
You can also find the latest software and firmware at the IBM DS4000 System Storage Support Web site: www.ibm.com/servers/storage/support/disk/ See the IBM System Storage DS4000 Storage Manager Version 10 Installation and Host Support Guide for your operating system for instructions that describe how to...
Page 39 Note: The Profile For Storage Subsystem window contains all the profile information for the entire subsystem. Therefore, it may be necessary to scroll through a large amount of information to locate the firmware version numbers. DS4000 Storage Server v NVSRAM version v Appware version v Bootware version Drives...
Page 40: Product Updates And Support Notifications
For more information about support notifications or the My Support feature, including instructions on how to register, see the following IBM Support Web page: www.ibm.com/systems/support/storage/subscribe/moreinfo.html You can also check the Stay Informed section of the IBM Disk Support Web site: www.ibm.com/servers/storage/support/disk/index.html Best practices guidelines...
Page 41: Specifications
A storage system in an optimal state should recover automatically from an unexpected shutdown and unattended simultaneous restoration of power to system components. After power is restored, call IBM support if any of the following conditions occur: – The storage subsystem logical drives and subsystems are not displayed in the DS4000 Storage Manager graphical user interface (GUI).
Page 42: Weight
This section describes the environmental conditions that are prerequisite to installing the unit, and heat and sound conditions that are generated by normal operation of the storage expansion enclosure. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 43: Temperature And Humidity
Temperature and humidity Table 10 lists the acceptable temperature and humidity ranges in which the storage subsystem is designed to operate. Important: The recommended operating environment air temperature is 22° C (72° F) or lower. Table 10. Temperature and humidity requirements Condition Parameter Requirement...
Page 44: Acoustic Noise
Note: Protective ground is also known as safety ground or chassis ground. v Circuit overloading – Power circuits and associated circuit breakers must provide sufficient power and overload protection. To prevent possible damage to the unit, IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 45: Site Wiring And Power
isolate its power source from large switching loads (such as air conditioning motors, elevator motors, and factory loads). v Power failures – If a total power failure occurs, the unit automatically performs a power-up recovery sequence without operator intervention after power is restored.
Page 46: Example Of Cold Aisle/Hot Aisle Rack Configuration
2440 mm between T42 racks center lines of hot and cold aisle back Hot aisle back T42 racks front Airflow Figure 9. Example of cold aisle/hot aisle rack configuration IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 47: Chapter 2. Installing The Exp420
The EXP420 weighs up to 40 kg (88 lb). At least two other people should help you lift the EXP420 from the shipping box. For safety reasons, IBM strongly recommends that you open the sides of the shipping box and remove...
Page 48: Handling Static-Sensitive Devices
If it is necessary to set the device down, place it in its static-protective package. Do not place the device on your system unit cover or on a metal table. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 49: Preparing For Installation
IBM reseller before proceeding. 4. Verify that you have the following software: v The correct version of the IBM DS4000 Storage Manager software. See “EXP420 hardware and software compatibility” on page 10. v DS4000 controller firmware that ships with the storage expansion enclosure.
Page 50: Preparing The Site
4. If necessary, turn off all drive enclosure and rack power. Disconnect existing power, network, and other external cables. 5. Install any additional interface cables and power cables. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 51: Installing The Support Rails
After you have completed these steps, continue with “Installing the EXP420” on page 26. Installing the support rails Attention: Duplicate copies of the rack mounting templates are provided in Appendix B, “Rack mounting template,” on page 113. If you want to tear out the templates from this document for easier use, use the copies in Appendix B, “Rack mounting template,”...
Page 52: Rear Rack Mounting Template
Refer to the installation and service guide, or equivalent, for the rack as required. 3. Locate the two support rails, eight of the twelve M5 screws, and eight washers that are supplied with the EXP420. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 53 Note: The M5 screws and washers may already be attached to the support rails. If so, remove them from the support rails. 4. The rack-mounted unit is three EIA units high. Decide accordingly where you are going to install the support rails. Attention: Use the rack mounting template provided in Figure 11 on page 23 and Figure 12 on page 24 to locate the proper rack mounting holes for...
Page 54: Installing The Exp420
You will need an antistatic wrist strap and a cart or level surface (to hold the CRUs). Observe the precautions listed in “Handling static-sensitive devices” on page 20 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 55: Removing An Esm
page 20. In the following procedure, you will remove the following CRUs from the storage expansion enclosure before you install it in the rack: v ESMs v Power supply and fan units v Hot-swap EV-DDMs You do not need to remove the blank trays. Statement 4: ≥...
Page 56: Removing A Power Supply And Fan Unit
1. Squeeze the latch and pull the lever open 90° (so that the lever is horizontal) to release the power supply and fan unit from the latch. The latch is a coral colored tab on the lever. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 57: Removing An Ev-Ddm
2. Slowly pull the lever away from the chassis to remove the power supply and fan unit, as shown in Figure 15. Note: The lever rotates upward or downward 90°, depending on whether the power supply and fan unit you are removing is in the left or right power supply and fan unit bay.
Page 58: Installing The Exp420 Into A Rack
Statement 4: ≥ 18 kg (39.7 lb) ≥ 32 kg (70.5 lb) ≥ 55 kg (121.2 lb) CAUTION: Use safe practices when lifting. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 59: Installing The Exp420
1. Put on antistatic protection, and keep it on while performing all of the remaining procedures in this chapter. 2. Remove the four screws from the rails (two screws in each rail). See 4 in Figure 13 on page 26. If you do not remove these screws, the storage expansion enclosure will not fit securely.
Page 60: Replacing The Exp420 Crus
1. Slide one ESM into the empty slot in the storage expansion enclosure. Be sure that the lever is pulled straight out as you slide the ESM in, as shown in Figure 19 on page 33. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 61: Replacing A Power Supply And Fan Unit
Notch Guide pin Lever Figure 19. Removing and replacing an Environmental Service Module (ESM) 2. As you slide the ESM into the empty slot, make sure the guide pins on the side of the ESM fit into the notches. After the guide pins fit into the notches and ESM fits snugly into the bay, push the lever downward or upward 90°, depending on whether the ESM is inserted in the A or B ESM bay to fully latch it into place.
Page 62: Replacing An Ev-Ddm
1. Lift up on the handle and gently push the EV-DDM CRU into the empty bay until the hinge of the tray handle latches beneath the storage expansion enclosure bezel, as show in Figure 21 on page 35. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 63: Replacing An Ev-Ddm
Figure 21. Replacing an EV-DDM 2. Push the tray handle down until the latch clicks into place. 3. Repeat step 1 on page 34 and step 2 to replace additional EV-DDMs. Chapter 2. Installing the EXP420...
Page 64 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 65: Chapter 3. Cabling The Exp420
Both ESM enclosure ID numbers are identical under normal operating conditions. The allowable ranges for enclosure ID settings are 0-99. However, IBM recommends that you do not set the enclosure ID to 00 or any number greater than 80 because DS4000 storage subsystem enclosure IDs are set in this range.
Page 66: Fibre-Channel Loop And Id Settings
Refer to the IBM System Storage DS4000 Hardware Maintenance Manual, Problem Determination Guide, or your IBM representatives or resellers for the cable option that is required for your configuration. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 67: Installing Sfp Modules
4-Gbps-capable port will limit the speed of that port to a maximum of 2 Gbps. Attention: Carefully check the SFP's IBM part number, option number, and FRU part number to identify its speed. There are no physical features that distinguish a 4 Gbps from a 2 Gbps SFP.
Page 68: Sfp Module And Protective Cap
3. Remove the protective cap from the SFP port. Save the protective cap for future use. 4. Insert the SFP module into the host port until it clicks into place. See Figure 24 on page 41. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 69: Removing Sfp Modules
Plastic tab Protective cap SFP module Figure 24. Installing an SFP module into the host port 5. Connect an LC-LC fibre-channel cable. For information about the LC-LC cable, see “Using LC-LC fibre-channel cables” on page 43. Removing SFP modules Complete the following steps to remove the SFP module from the host port: Attention: To avoid damage to the cable or to the SFP module, make sure that you unplug the LC-LC fibre-channel cable before you remove the SFP module.
Page 70: Handling Fibre-Optic Cables
– 1 Gbps: 500 meters 50/125 um fibre, 300 meters 62.5/125 um fibre – 2 Gbps: 300 meters 50/125 um fibre, 150 meters 62.5/125 um fibre – 4 Gbps: 150 meters 50/125 um fibre, 70 meters 62.5/125 um fibre IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 71: Using Lc-Lc Fibre-Channel Cables
The LC-LC fibre-channel cable is a fibre-optic cable that you use to connect into one of the following devices: v An SFP module installed in an IBM storage expansion enclosure v An SFP module installed in a DS4200 Express, DS4300, DS4500, DS4700, or DS4800 storage subsystem See Figure 28 for an illustration of the LC-LC fibre-channel cable.
Page 72: Connecting An Lc-Lc Cable To An Sfp Module
EXP420. The cable connector is keyed to ensure it is inserted into the SFP module correctly. Holding the connector, push in the cable until it clicks into IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 73: Removing An Lc-Lc Fibre-Channel Cable
place, as shown in Figure 30. Figure 30. Inserting an LC-LC fibre-channel cable into an SFP module 5. Remove the two protective caps from the other end of the LC-LC cable. Save the protective caps for future use. 6. Connect this end of the LC-LC cable to one of the following devices: v An SFP module that is installed in a separate EXP420 v An SFP module that is installed in a DS4300 or DS4500 Removing an LC-LC fibre-channel cable...
Page 74: Cabling The Exp420 To A Storage Subsystem
1. Install an SFP module in the drive mini hub port on the back of the storage subsystem. 2. Connect an LC-LC fibre-optic cable into the SFP module, as shown in Figure 33 on page 47. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 75: Installing An Sfp Module And Lc-Lc Cable In A Supported Ds4000 Storage Subsystem
DS4000 storage subsystem. (Figure 35 on page 49 shows the location of the ports.) v Refer to the IBM System Storage DS4000 Hard Drive and Storage Expansion Enclosure Installation and Migration Guide and the IBM System Storage Subsystem Installation, User's, and Maintenance Guide of your particular DS4000 storage subsystem for any special cabling requirements.
Page 76: Exp420 Loop Redundancy
ESMs. Note: For specific information about cabling a storage expansion enclosure to a DS4000 storage subsystem, see the appropriate DS4000 Installation, User's, and Maintenance Guide. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 77: Correct Exp420 Redundant Drive Loop Configuration
Drive Loop B Drive Loop A EXP420 1A 1B EXP420 1A 1B EXP420 1A 1B EXP420 1A 1B exp42004 Figure 35. Correct EXP420 redundant drive loop configuration To create drive loop A (of the DS4200 Express redundant drive loop) shown in Figure 35, you would perform the following steps: 1.
Page 78: Example Of An Incorrect Redundant Drive Loop
Figure 36 on page 51 show the order in which cables were attached. Note: For specific information about cabling a storage expansion enclosure to a DS4000 storage subsystem, see the appropriate DS4000 Installation, User's, and Maintenance Guide. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 79: Incorrect Exp420 Redundant Drive Loop Configuration
Drive Loop B Drive Loop A EXP420 1A 1B EXP420 1A 1B EXP420 1A 1B EXP420 1A 1B exp42001 Figure 36. Incorrect EXP420 redundant drive loop configuration The following list describes the incorrect fibre-channel connections for drive loop A (of the DS4200 Express redundant drive loop) shown in Figure 36. 1.
Page 80: Cabling The Power Supply
5. Continue with “Powering on the EXP420” on page 55 for the initial startup of the storage expansion enclosure. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 81: Chapter 4. Operating The Exp420
Performing the DS4000 Health Check process The DS4000 Health Check process is a sequence of suggested actions developed by IBM to help users verify and maintain the optimal performance of their DS4000 storage configurations. The information that you collect in these steps also helps provide IBM Service with important information needed for problem troubleshooting during IBM Service calls.
Page 82: Web Pages
Storage Subsystem Profile to verify that cache is matched between the controllers. Web pages IBM maintains pages on the World Wide Web where you can get the latest technical information and download device drivers and updates. For DS4000 information, go to the following Web site: www.ibm.com/servers/storage/support/disk/...
Page 83: Powering On The Exp420
Ensure that all drives are properly seated. v Ensure that all SFP modules are properly seated. v Confirm fibre channel cable loop size. (IBM specifications call for at least 3-inch cable loops, but it is recommended that you use 6-inch cable loops or longer.) v Ensure proper fibre channel cable management.
Page 84: Power Supply Switches And Connectors
15 minutes to complete its controller battery self-test. During this time, the indicator lights on the front and back of the module blink intermittently. exp81024 Figure 37. Power supply switches and connectors IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 85: Firmware Updates
When the recovery procedure is completed, select Recheck in the Recovery Guru. This action reruns the Recovery Guru to ensure that the problem has been corrected. d. If the problem persists, contact your IBM service representative. Firmware updates Attention: Save the storage subsystem profile before performing any controller or ESM firmware upgrades.
Page 86: Finding Controller, Storage Expansion Enclosure, And Drive Information
6. Scroll through the list to find the Product ID for supported storage expansion enclosures. 7. Select the Drives tab. 8. Scroll through the list to find the drive values such as Product ID. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 87: Troubleshooting The Storage Expansion Enclosure
DS4000 storage subsystem and all remaining storage expansion enclosures in the storage subsystem. Contact IBM Customer and Technical Support before powering off any attached storage expansion enclosures. 5. Mute the alarm, if needed.
Page 88: Power Supply And Fan Unit Leds
Note: The drives in your storage expansion enclosure might differ slightly in appearance from those shown. The variation does not affect the function of the drives. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 89: Rear Leds
exp81021 Figure 39. Front LEDs Table 17. Front LEDs and controls Number Normal Status Problem Status Drive Activity LED On (not blinking) - No data is being processed Blinking - data is being processed Drive Fault LED On (not blinking) Note: In certain ESM Blinking - Drive, volume, firmware versions, the...
Page 90: Seven-Segment Numeric Display
The numeric display consists of two seven-segment LEDs that provide information about enclosure identification and diagnostics. Figure 41 on page 63 shows the numeric display and the diagnostic LED. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 91: Numeric Display Leds
Seven- segment display 76041 Diagnostic LED Figure 41. Numeric display LEDs When you power on the storage expansion enclosures, the seven-segment LEDs show 88 before the boot firmware starts to run. After the boot code starts, - - is displayed. When the application code starts, the ESMs display either aa or bb depending on whether it is ESM A or B.
Page 92: Powering Off The Storage Expansion Enclosure
Use the following procedure to turn off the power for the EXP420. Figure 37 on page 56 shows the location of the power switches on a storage expansion enclosure. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 93 Instructions in a hardware or software procedure require that you turn off the power. v An IBM technical support representative instructs you to turn off the power. v A power outage or emergency situation occurs, see “Restoring power after an unexpected shutdown”...
Page 94 5. To diagnose and correct the fault, complete the following steps: a. Run the Recovery Guru by selecting the Recovery Guru toolbar button in the Subsystem Management Window. b. Complete the recovery procedure. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 95: Performing An Emergency Shutdown
Recovery Guru. This action reruns the Recovery Guru to ensure that the problem has been fixed. d. If the problem has not been fixed, contact your IBM service representative. Do not turn off power until all problems are corrected. 6. Check the Cache Active LED, and verify that it is off.
Page 96: Recovering From An Overheated Power Supply And Fan Unit
Fan failures in the power supply and fan units v Defective circuitry in the power supply v Blocked air vents v Failures in other devices in the configuration or cabinet IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 97 If a fan failure causes overheating, the Global Fault LED on the storage expansion enclosure turns on. The power-fan canister Fault LED on the back of the storage expansion enclosure also turns on. “Rear LEDs” on page 61 shows the location of these LEDs.
Page 98: Power Supply Switches
Complete the recovery procedure. If the Recovery Guru directs you to replace a failed component, locate and troubleshoot that component. See “Checking the LEDs” on page 59. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 99 When the procedure is completed, rerun the Recovery Guru to ensure that the problem has been corrected by selecting Recheck in the Recovery Guru. d. If the problem persists, contact IBM Customer and Technical Support. 13. Replace the bezel on the storage expansion enclosure, if applicable. Chapter 4. Operating the EXP420...
Page 100 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 101: Chapter 5. Installing And Replacing Devices
The Service Action Allowed status LED automatically turns on or off as conditions change. Wait at least two minutes after you replace each component for the controller to recognize the new component and update the LED status. In most © Copyright IBM Corp. 2006, 2007...
Page 102: Adding The Exp420 To An Existing And Configured Redundant Drive Channel/Loop Pair
CRUs are bad. Figure 43 on page 75 shows an example of a DS4000 storage subsystem configured with redundant drive loop pairs. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 103: Cabling The Exp420 To An Existing And Configured Drive Loop
Drive Loop A Drive Loop B EXP420 1A 1B EXP420 1A 1B EXP420 1A 1B EXP420 1A 1B exp42005 Figure 43. Cabling the EXP420 to an existing and configured drive loop The dashed lines in Figure 43 show how to add a new EXP420 to an existing DS4200 Express configuration with EXP420s.
Page 104: Working With Hot-Swap Ev-Ddms
Save the empty trays for future use. Each of the 16 bays must always contain either a blank tray or a hot-swap EV-DDM. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 105 Rate setting speed must be set accordingly. See “Verifying the Link Rate setting ” on page 86 for more information. – IBM recommends that when adding EV-DDM CRUs, if you are not installing all 16 EV-DDM CRUs into the EXP420, install the EV-DDM CRUs from left to right consecutively.
Page 106: Installing Hot-Swap Ev-Ddms
EV-DDMs while the storage expansion enclosure is turned on and running. Complete the following steps to install hot-swap EV-DDMs in the storage expansion enclosure: IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 107: Hot-Swap Ev-Ddm Leds
Attention: v After you remove a EV-DDM CRU, wait 70 seconds before replacing or reseating it to allow it to properly spin down. Failure to do so may cause undesired events. v The DS4200 Express and EXP420 EV-DDMs and FRUs are not compatible with DS4700 and EXP810 E-DDMs and FRUs.
Page 108: Replacing Hot-Swap Ev-Ddms
LED is flashing. Hot-swap a EV-DDM CRU only when its associated amber Fault LED is lit and not flashing. 3. Put on antistatic protection. 4. Remove the EV-DDM CRU by performing the following steps: IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 109: Replacing Multiple Ev-Ddms
a. Release the latch on the EV-DDM CRU by pressing on the inside of the bottom of the tray handle, as shown by the arrow in Figure 45 on page 80. b. Pull the tray handle out into the open position. c.
Page 110: Replacing All Ev-Ddms At The Same Time
EV-DDMs. This procedure also requires you to turn off the EXP420 and the DS4000, which makes the storage subsystem (and any attached storage expansion enclosures) inaccessible to other users. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 111 1) All of the green Drive activity LEDs on the front of the storage subsystem (and on all attached EXP420s) are not flashing. 2) The green Cache active LEDs are off. Refer to the IBM System Storage DS4200 Express Storage Subsystem Installation, User's, and Maintenance Guide for the location of the Cache active LEDs.
Page 112: Replacing The Ev-Ddms One At A Time
After you remove a EV-DDM CRU, wait 70 seconds before replacing or reseating the EV-DDM CRU to allow it to properly spin down. Failure to do so may cause undesired events. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 113 To replace the EV-DDMs one at a time, perform the following steps: 1. Read the following information: v “Replacing multiple EV-DDMs” on page 81, particularly the paragraphs that discuss the differences between the two possible upgrade procedures v Your software documentation regarding drive upgrades and installation v The documentation that comes with the new EV-DDMs Read all precautionary notes, kit instructions, and other information.
Page 114: Verifying The Link Rate Setting
See Table 22 on page 87 for more information. The enclosure speed of the DS4200 Express Storage Subsystem that the EXP420s are connected to must also be set to 4 Gbps. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 115 DS4000 storage subsystems can be obtained from the certified Compatibility Matrix, which can be found at the following Internet location: www-1.ibm.com/servers/storage/disk/ds4000/interop-matrix.html 1. Complete the power-off sequence described in “Turning off the EXP420 ” on page 64 ensuring that the DS4000 storage subsystem is turned off before any attached storage expansion enclosures.
Page 116: Link Rate Leds
(2 Gbps or 4 Gbps) Figure 47. Link rate switch 5. Change the Link Rate switch setting by performing the following steps: a. Put on antistatic protection. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 117: Replacing A Power Supply And Fan Unit
When the procedure is completed, rerun the Recovery Guru to ensure that the problem has been corrected by selecting Recheck in the Recovery Guru. 11. If the problem persists, contact IBM Customer and Technical Support. Replacing a power supply and fan unit Statement 5:...
Page 118 If replacing it will take longer than 15 minutes, stop all I/O activity to the storage expansion enclosure and turn off the power until you complete the replacement. Statement 8: IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 119 CAUTION: Never remove the cover on a power supply and fan unit or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components.
Page 120 Then gently push the front of the power supply and fan unit to ensure that it is fully seated. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 121: Replacing A Power Supply And Fan Unit
Reinstall the power supply and fan unit. If the above tasks do not resolve the problem, contact IBM Customer and Technical Support. 17. Complete any remaining Recovery Guru procedures, if needed.
Page 122: Replacing An Environmental Service Module (Esm)
In the Subsystem Management Menu, select Storage Subsystem → View → Profile. The Storage Subsystem Profile window opens. b. In the Storage Subsystem Profile window, click Save As. The Save Profile window opens. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 123: Removing And Replacing An Environmental Service Module (Esm)
c. In the Save Profile window, select or enter the file directory and file name. Click Save to save the profile. The Save Profile window closes. Important: Do not store DS4000 profiles in the same location as the logical drives that are defined on your DS4000 configuration. If you do, and the logical drives fail, you will lose data.
Page 124: Replacing An Sfp Module
The SFP module shown in this procedure might look different from those you are using, but the difference will not affect functionality. Figure 50 on page 97 illustrates installing an SFP module. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 125: Replacing An Sfp Module
4. Put on antistatic protection. 5. Unpack the new SFP module. Verify that it is the same type of module you are replacing. If it is not, contact IBM Customer and Technical Support. Attention: v The speed of the SFP module determines the maximum operating speed of the fibre channel port in which the SFP is installed.
Page 126: Replacing A Midplane
Squeeze the latch and pull the lever open 90° (so that the lever is horizontal) to release the power supply and fan unit from the latch. The latch is a coral colored tab on the lever. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 127: Replacing A Midplane
b. Slowly pull the lever away from the chassis to remove the power supply and fan unit, as shown in Figure 15 on page 29. (You do not have to actually remove them from the power supply and fan unit bays.) Note: The lever rotates upward or downward 90°, depending on whether the power supply and fan unit you are removing is in the right or left power supply and fan unit bay.
Page 128 19. Wait at least 3 minutes and then power on the DS4000 storage subsystem. Verify the status of the configuration using LEDs and the DS4000 Storage Manager client program. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 129: Chapter 6. Hardware Maintenance
For instructions on how to obtain service and technical assistance for your storage subsystem and other IBM products, see “Getting information, help, and service” on page xxii.
Page 130 CRUs, this indicates an SFP module transmission fault in the storage expansion enclosure. Replace the failed SFP module. See the DS4000 Storage Manager software documentation for more information. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 131 Table 23. Symptom-to-FRU index (continued) Problem indicator Component Possible cause Possible solutions Amber LED is lit Power supply Power supply failure Replace the failed power supply, and green LED is or power switch is turn on all power supply turned off or there is switches, or check the main or an ac power failure.
Page 132 CRUs has function in the Storage Manager Summary Fault intermittent Client Subsystem Management LED) problems. window and the DS4000 storage subsystem Major Event Log to troubleshoot the problem. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 133 Verify that the drives are seated fully inserted in the correctly in the drive slots. drive slots. Remove and reinsert the drive CRUs if required. Midplane failure Replace the midplane. Contact an IBM technical support representative. Chapter 6. Hardware maintenance...
Page 134 Power supply failure Check the power supply Fault LED on the power supply. If the LED is lit, replace the failed CRU. Midplane failure Have the midplane replaced. Contact an IBM technical support representative. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 135: Parts Listing
ESM failure Replace one or both ESMs. Contact an IBM technical support representative. Drive or drives Replace failed drive or drives. failed Drive is not certified Check the DS4000 product Web...
Page 136: Exp420 Storage Expansion Enclosure Parts List
Blank drive module 42D0374 Cable, FRU-1M 39M5699 Cable, FRU-5M 39M5700 Cable, FRU-25M 39M5701 FRU, SFP LC (shortwave) 4 Gbps 22R6443 Power cord, 2.8M 39M5081 Power cord, jumper 39M5377 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 137: Appendix A. Records
Whenever you add options to your storage expansion enclosure, be sure to update the information in this appendix. Accurate, up-to-date records make it easier to add other options and provide needed data whenever you contact your IBM technical support representative.
Page 138: Storage Subsystem And Controller Information Record
For a sample information record, see Table 26 on page 111. Table 25. Storage subsystem and controller information record Storage subsystem Management Controllers-Ethernet and IP Host-IP address name method addresses, and host name and host name IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 139: Sample Information Record
Sample information record Table 26 shows a sample information record. This network contains storage subsystems that are managed by using both the direct-management and host-agent-management method. Table 26. Sample information record Storage Management Controllers-Ethernet and IP Host-IP address subsystem name method addresses, and host name and host name...
Page 140: Installed Device Records
If you replace a hard disk drive in the wrong drive bay it might cause a loss of data. Table 27. Hard disk drive record Replaced hard disk drive serial Bay Number Hard disk drive serial number number IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 141: Appendix B. Rack Mounting Template
Note: The mounting holes that are shown in the following templates are square. The holes in your rack might be round or square. © Copyright IBM Corp. 2006, 2007...
Page 142: Front Rack Mounting Template
<--- Install first Install first ---> <--- Install first Rail assembly Rail assembly Install second ---> (Front Left) (Front Right) exp42006 Figure 53. Front rack mounting template IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 143 EXP420 REAR Rack Mounting Template Rail mounting guide Rail assembly Rail assembly (Rear Left) (Rear right) ® Printed in the U.S.A exp42007 Figure 54. Rear rack mounting template Appendix B. Rack mounting template...
Page 144 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 145: Appendix C. Power Cords
Appendix C. Power cords For your safety, IBM provides a power cord with a grounded attachment plug to use with this IBM product. To avoid electrical shock, always use the power cord and plug with a properly grounded outlet. IBM power cords used in the United States and Canada are listed by Underwriter’s Laboratories (UL) and certified by the Canadian Standards Association (CSA).
Page 146 Republic, Tajikistan, Tahiti, Togo, Tunisia, Turkey, Turkmenistan, Ukraine, Upper Volta, Uzbekistan, Vanuatu, Vietnam, Wallis and Futuna, Yugoslavia (Federal Republic of), Zaire 39Y7918 9821 Power Cord (250v, Denmark 10A, 2.8m) IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 147 Table 28. IBM power cords (continued) IBM power cord Feature Used in these countries or part number code Description regions 39Y7923 9825 Power Cord (250v, Abu Dhabi, Bahrain, Botswana, 10A, 2.8m) Brunei Darussalam, Channel Islands, Cyprus, Dominica, Gambia, Ghana, Grenada, Guyana, Hong...
Page 148 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 149: Appendix D. Additional Ds4000 Documentation
Appendix D. Additional DS4000 documentation The following tables present an overview of the IBM System Storage DS4000 Storage Manager, Storage Subsystem, and Storage Expansion Enclosure product libraries, as well as other related documents. Each table lists documents that are included in the libraries and what common tasks they address.
Page 150: Ds4800 Storage Subsystem Library
DS4800 Storage Subsystem Installation, User’s and Maintenance Guide IBM System Storage Quick start guide, Quick reference for the DS4800 IBM TotalStorage DS4800 Controller Cache Upgrade Kit Instructions IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 151: Ds4700 Storage Subsystem Library
User Tasks Planning Hardware Software Configuration Operation and Diagnosis and Installation Installation Administration Maintenance IBM System Storage DS4700 Storage Subsystem Installation, User’s and Maintenance Guide IBM System Storage Quick start guide, Quick reference for the DS4700 and DS4200, Sections 2,...
Page 152: Ds4500 Storage Subsystem Library
Installation Installation Administration Maintenance IBM TotalStorage DS4500 Storage Subsystem Installation, User's, and Maintenance Guide IBM TotalStorage DS4500 Storage Subsystem Cabling Instructions IBM TotalStorage DS4500 Rack Mounting Instructions IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 153: Ds4400 Storage Subsystem Library
User Tasks Planning Hardware Software Configuration Operation and Diagnosis and Installation Installation Administration Maintenance IBM TotalStorage DS4400 Fibre Channel Storage Server User’s Guide IBM TotalStorage DS4400 Fibre Channel Storage Server Installation and Support Guide IBM TotalStorage DS4400 Fibre Channel Cabling Instructions Appendix D.
Page 154: Ds4300 Storage Subsystem Library
DS4300 Storage Subsystem Cabling Instructions IBM TotalStorage DS4300 SCU Base Upgrade Kit IBM TotalStorage DS4300 SCU Turbo Upgrade Kit IBM TotalStorage DS4300 Turbo Models 6LU/6LX Upgrade Kit IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 155: Ds4200 Express Storage Subsystem Library
User Tasks Planning Hardware Software Configuration Operation and Diagnosis and Installation Installation Administration Maintenance IBM System Storage DS4200 Express Storage Subsystem Installation, User’s and Maintenance Guide IBM System Storage Quick start guide, Quick reference for the DS4700 and DS4200, Sections 2,...
Page 156: Ds4100 Storage Subsystem Library
Software Configuration Operation and Diagnosis and Installation Installation Administration Maintenance IBM TotalStorage DS4100 Storage Server Installation, User’s and Maintenance Guide IBM TotalStorage DS4100 Storage Server Cabling Guide IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 157: Ds4000 Storage Expansion Enclosure Documents
User Tasks Planning Hardware Software Configuration Operation and Diagnosis and Installation Installation Administration Maintenance IBM System Storage DS4000 EXP810 Storage Expansion Enclosure Installation, User’s, and Maintenance Guide IBM System Storage Quick start guide, Quick reference for the DS4700 and DS4200, Sections 2,...
Page 158: Other Ds4000 And Ds4000-Related Documents
Setup Guide Notes: 1. The IBM TotalStorage DS4000 Hardware Maintenance Manual does not contain maintenance information for the IBM System Storage DS4100, DS4200, DS4300, DS4500, DS4700, or DS4800 storage subsystems. You can find maintenance information for these products in the IBM System Storage DSx000 Storage Subsystem Installation, User's, and Maintenance Guide for the particular subsystem.
Page 159: Appendix E. Accessibility
Move keyboard focus to main menu bar and post first menu; use the arrow keys to navigate through the available options. Alt+F4 Close the management window. Alt+F6 Move keyboard focus between dialogs (non-modal) and between management windows. © Copyright IBM Corp. 2006, 2007...
Page 160 Left arrow Move keyboard focus to the left. Right arrow Move keyboard focus to the right. Up arrow Move keyboard focus up one item in the list. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 161: Appendix F. Product Recycling And Disposal
(TI) que reciclen responsablemente sus equipos cuando éstos ya no les sean útiles. IBM dispone de una serie de programas y servicios de devolución de productos en varios países, a fin de ayudar a los propietarios de equipos a reciclar sus productos de TI.
Page 162 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 163: Appendix G. Battery Return Program
United States, go to www.ibm.com/ibm/environment/products/ batteryrecycle.shtml or contact your local waste disposal facility. In the United States, IBM has established a return process for reuse, recycling, or proper disposal of used IBM sealed lead acid, nickel cadmium, nickel metal hydride, and other battery packs from IBM Equipment.
Page 164 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 165: Notices
Web sites. The materials at those Web sites are not part of the materials for this IBM product, and use of those Web sites is at your own risk. IBM may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
Page 166: Important Notes
IBM makes no representations or warranties with respect to non-IBM products. Support (if any) for the non-IBM products is provided by the third party, not IBM. Some software may differ from its retail version (if available), and may not include user manuals or all program functionality.
Page 167: Battery Return Program
United States, see http://www.ibm.com/ibm/environment/ products/batteryrecycle.shtml or contact your local waste disposal facility. In the United States, IBM has established a return process for reuse, recycling, or proper disposal of used IBM sealed lead acid, nickel cadmium, nickel metal hydride, and battery packs from IBM equipment.
Page 168: Contact Information
This is a class A statement. In a domestic environment, this product might cause radio interference in which case the user might be required to take adequate measures. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 169: Industry Canada Class A Emission Compliance Statement
IBM cannot accept responsibility for any failure to satisfy the protection requirements resulting from a nonrecommended modification of the product, including the fitting of non-IBM option cards. This product has been tested and found to comply with the limits for Class A Information Technology Equipment according to CISPR 22/European Standard EN 55022.
Page 170: Japanese Voluntary Control Council For Interference (Vcci) Statement
Japanese Voluntary Control Council for Interference (VCCI) statement IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 171: Glossary
(AT) bus architecture. A bus If you do not find the term you are looking for, see standard for IBM compatibles. It extends the XT bus the IBM Glossary of Computing Terms located at architecture to 16 bits and also allows for bus...
Page 172 CRC. See cyclic redundancy check. be the same for all SCSI targets logically connected to an FC adapter. CRT. See cathode ray tube. CRU. See customer replaceable unit. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 173 See drive channels. Extended Industry Standard Architecture (EISA). A DRAM. See dynamic random access memory. bus standard for IBM compatibles that extends the Industry Standard Architecture (ISA) bus architecture to Dynamic Host Configuration Protocol (DHCP). A 32 bits and allows more than one central processing protocol defined by the Internet Engineering Task Force unit (CPU) to share the bus.
Page 174 (EISA) further expanded the data path to 32 bits. See overlapping windows, icons, and the object-action also Extended Industry Standard Architecture. relationship. GUI. See graphical user interface. IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 175 (IDE). A disk drive (2) A fixed-size portion of a logical volume. A logical interface based on the 16-bit IBM personal computer partition is the same size as the physical partitions in its Industry Standard Architecture (ISA) in which the volume group.
Page 176 10 peripherals (video, disk, network, and so on). NMI. See non-maskable interrupt. The PCI bus coexists in the PC with the Industry Standard Architecture (ISA) or Extended Industry IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 177 (PTF). A temporary solution or bypass of a problem diagnosed by IBM in a current RVSD. See recoverable virtual shared disk. unaltered release of the program.
Page 178 (SFP). An optical group, the host computer, and host-port nodes. The transceiver that is used to convert signals between host port, host computer, and host group topological IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 179 elements must be defined to grant access to host Transmission Control Protocol (TCP). A computers and host groups using logical drive-to-LUN communication protocol used in the Internet and in any mappings. network that follows the Internet Engineering Task Force (IETF) standards for internetwork protocol. TCP striping.
Page 180 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 181: Index
Taiwan Product Service 140 Storage Subsystem library 128 controller DS4200 Express information record 110 Storage Subsystem library 127 controller information 58 DS4300 cooling 17 Storage Subsystem library 126 Copy Services Guide 121 © Copyright IBM Corp. 2006, 2007...
Page 182 FCC Class A notice 140 controller 110 Fibre Channel overview 2 information, contact 140 fibre-channel loop 38 installation adding the EXP420 74 into a rack 30 into a rack cabinet 19 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 183 installation (continued) power cords (continued) preparation 21, 26 routing 22 installed device records 112 power cords and receptacles 17 installing and replacing devices power indicator light blank trays 76 power supply and fan unit 6 hot-swap hard disk drives 73 power outage inventory checklist 2 due to overheated power supplies 68...
Page 184 67 premium feature activation xxiv startup sequence 55 readme files xxiii troubleshooting 59 SAN support xxiii turn on and turn off the 55 switch support xxiii IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 185 wiring and power 17 Index...
Page 186 IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide...
Page 187 When you send comments to IBM, you grant IBM a nonexclusive right to use or distribute your comments in any way it believes appropriate without incurring any obligation to you. IBM or any other organizations will only use the personal information that you supply to contact you about the issues that you state on this form.
Page 188 Readers’ Comments — We’d Like to Hear from You Cut or Fold Along Line GC27-2050-02 Fold and Tape Please do not staple Fold and Tape _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ NO POSTAGE NECESSARY IF MAILED IN THE...
Page 190 Printed in USA GC27-2050-02...

IBM System Storage DS4000 EXP420 Installation, User And Maintenance Instructions

Figures

Tables

Safety

About this Document

Chapter 1. Introduction

Chapter 2. Installing the EXP420

Chapter 3. Cabling the EXP420

Chapter 4. Operating the EXP420

Chapter 5. Installing and Replacing Devices

Chapter 6. Hardware Maintenance

Appendix A. Records

Appendix B. Rack Mounting Template

Appendix C. Power Cords

Appendix D. Additional DS4000 Documentation

Appendix E. Accessibility

Appendix F. Product Recycling and Disposal

Appendix G. Battery Return Program

Notices

Glossary

Index

Quick Links

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for IBM System Storage DS4000 EXP420

Summary of Contents for IBM System Storage DS4000 EXP420