IBM DS3950 User And Installation Manual
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IBM DS3950 User And Installation Manual

IBM DS3950 User And Installation Manual

Exp395 storage expansion enclosure
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IBM System Storage DS3950 EXP395
Storage Expansion Enclosure
Installation, User's, and Maintenance
Guide
GA32-0956-04

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  • Page 1 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure Installation, User’s, and Maintenance Guide GA32-0956-04...
  • Page 2 Before using this information and the product it supports, be sure to read the general information in the “Safety” on page ix and “Notices” on page 139 sections. This edition applies to the IBM System Storage DS3950 EXP395 Storage Expansion Enclosure with controller firmware version 7.60, and to all subsequent releases and modifications until otherwise indicated in new editions.

  • Page 3: Table Of Contents

    README files . . xxi Installing the EXP395 into a rack . . 28 IBM System Storage Productivity Center . . xxii Essential Web sites for DS storage Chapter 3. Cabling the EXP395 ..31 managersupport information .
  • Page 4 Index ....157 DS3950 storage subsystem library . 126 DS4800 storage subsystem library . 127 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 5: Figures

    EXP395 hot-swap drive bays . Installing an SFP module and LC-LC cable in a Rear view of drive channel ports . supported DS3950 storage subsystem . . 42 Power supply and fan unit components Installing an SFP module and connecting an Power supply and fan unit and airflow LC-LC cable to the EXP395 .
  • Page 6 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 7: Tables

    EXP395 weights . . 13 tasks . 125 EXP395 component weights . . 13 DS3950 storage subsystem document titles by EXP395 shipping carton dimensions . . 14 user tasks . . 126 Temperature and humidity requirements for DS4800 storage subsystem document titles by storage expansion enclosure when in storage user tasks .
  • Page 8 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 9: Safety

    Attention: These notices indicate possible damage to programs, devices, or data. An attention notice is placed just before the instruction or situation in which damage could occur. Before installing this product, read the following danger and caution notices. Statement 1: © Copyright IBM Corp. 2009, 2013...
  • Page 10 Throw or immerse into water v Heat to more than 100° C (212° F) v Repair or disassemble Dispose of the battery as required by local ordinances or regulations. Statement 3: IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 11 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 12 There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician. Statement 29: IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 13 CAUTION: This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. If this connection is made, all of the following conditions must be met: v This equipment shall be connected directly to the dc supply system earthing electrode conductor or to a bonding jumper from an earthing terminal bar or...
  • Page 14 State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 15: About This Document

    How this document is organized Chapter 1, “Introduction,” on page 1 describes the IBM System Storage EXP395 storage expansion enclosure. This chapter includes an inventory checklist and an overview of the storage expansion enclosure features, operating specifications, and components.

  • Page 16: Ds Storage Subsystem Installation Tasks - General Overview

    Maintenance Guide for the following storage subsystems: – DS5100/DS5300 – DS5020 – DS4800 – DS4700 – DS4500 – DS4400 – DS4300 – DS4200 – DS4100 – DS3950 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 17 Table 1. Where to find DS storage subsystem installation and configuration procedures (continued) Installation task Where to find information or procedures Mount the DS v IBM System Storage Quick Start Guide for the following storage subsystem in storage subsystems: the rack – DS5100/DS5300 –...
  • Page 18 – DS5100/DS5300 – DS5020 – DS4800 – DS4700 – DS4500 – DS4300 – DS4200 – DS4100 – DS3950 v IBM TotalStorage DS4400 Fibre Channel Cabling Instructions xviii IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 19 Table 1. Where to find DS storage subsystem installation and configuration procedures (continued) Installation task Where to find information or procedures Power on the v IBM System Storage Quick Start Guide for the following subsystem storage subsystems: – DS5100/DS5300 – DS5020 –...
  • Page 20 IBM System Storage DS Storage Manager Version 10 Installation logical drives and Host Support Guide Configure host v DS Storage Manager online help partitions Verify host access to DS storage subsystem IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 21: 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 22: Ibm System Storage Productivity Center

    IBM System Storage Productivity Center to manage multiple IBM System Storage product configurations from a single management interface. To learn how to incorporate the DS Storage Manager with the IBM System Storage Productivity Center, see the IBM System Storage Productivity Center Information Center at the following Web site: publib.boulder.ibm.com/infocenter/tivihelp/v4r1/index.jsp...

  • Page 23: Software Service And Support

    Software service and support Through IBM Support Line, for a fee you can get telephone assistance with usage, configuration, and software problems. 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...

  • Page 24: 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. xxiv IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 25: Chapter 1. Introduction

    Small Form-Factor Pluggable (SFP) modules connect the DS3950 storage subsystem to the EXP395 storage expansion enclosure. Note: The EXP395 storage expansion enclosure can be attached only to the DS3950 storage subsystem. The EXP395 is a rack-mountable enclosure that supports up to 16 600 GB fibre-channel or FC-SAS Enhanced Disk Drive Modules (E-DDMs), or 2 TB SATA E-DDMs, offering up to 9.6 terabytes (TB) of fibre-channel disk space or 32 TB of...

  • Page 26: Operating System Support

    See “Finding Storage Manager software, controller firmware, and README files” on page xxi to learn how to access the DS3950 README files on the Web. FC-SAS defined In this document, the term FC-SAS refers to a SAS drive with a FC-SAS interposer that translates the SAS drive interface to a FC protocol interface.

  • Page 27: T10 Pi Defined

    “Installing the support rails” on page To connect your EXP395 to other devices, use the following options: v IBM SFP module v IBM LC-LC fibre-channel cable Note: You must order these options separately. EXP395 components The EXP395 has the following removable components.

  • Page 28: Exp395 Hot-Swap Drive Bays

    The FC-SAS E-DDMs have a FC-SAS interposer card that translates the SAS drive interface to a 4 Gbps FC protocol interface of the DS3950 drive channel. Each SAS drive, FC-SAS interposer card (with a 2.5" to 3.5" form factor conversion), and carrier assembly are called FC-SAS E-DDM CRUs.

  • Page 29: Environmental Service Modules (Esms)

    To enable automatic ESM firmware synchronization: 1. Verify that the DS Storage Manager Event Monitor is installed and running. 2. Verify that the DS3950 storage subsystem that the EXP395 is attached to is defined in the Enterprise Management window of the DS Storage Manager client (SMclient).

  • Page 30: Rear Drive Channel Ports

    Figure 3 on page 7 shows power supply and fan unit components. Note: Although both power supply and fan units (left and right) are identical, they are seated in the EXP395 chassis in opposite orientations. If the power IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 31: Power Supply And Fan Unit Components

    supply and fan unit cannot fully be inserted in the power supply and fan unit bay, flip it 180 degree and reinsert it. exp81024 Figure 3. Power supply and fan unit components Table 3 describes the power supply and fan unit components shown in Figure 3. Table 3.

  • Page 32: Small Form-Factor Pluggable (Sfp) Modules

    Figure 5 on page 9 shows an SFP module with fibre optic cable. Note: The SFP module shown might look different from those shipped with your storage expansion enclosure. The differences does not affect transceiver performance. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 33: Software And Hardware Compatibility And Upgrades

    SATA drive FRUs firmware must be installed to ensure optimal functionality, manageability, and reliability. Unless stated otherwise, you can find the latest DS3950 publications, firmware, and host software at the IBM DS System Storage Support Web site: www.ibm.com/servers/storage/support/disk/...

  • Page 34: Exp395 Hardware And Software Compatibility

    Note: The ATA translator card firmware and drive firmware are typically packaged together as a single drive firmware upgrade file. FC to SAS interposer card firmware version (FC-SAS E-DDMs only) IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 35: Receiving Product Updates And Support Notifications

    Keep your system up-to-date with the latest firmware and other product updates by subscribing to receive support notifications. For more information about how to register for support notifications, see the Stay Informed section of the IBM Disk Support Web site: www.ibm.com/servers/storage/support/disk/ Best practices guidelines...
  • Page 36 Similarly, the right and left power supplies of the DS3950 storage subsystem that the EXP395 storage expansion enclosures are attached to should be plugged into the same two independent external power circuits as the EXP395s.

  • Page 37: Specifications

    Specifications This section provides site specifications for the storage expansion enclosure. Before installing a storage expansion enclosure, you must either verify that your planned installation site meets these requirements, or prepare the site so that it does meet these requirements. Preparations might involve meeting area requirements, environmental requirements, and electrical requirements for storage expansion enclosure installation, service, and operation.

  • Page 38: Shipping Dimensions

    20° C (36° F) per hour Relative humidity (no Storage range 8% to 90% condensation) Transit range 5% to 95% Maximum dew point 26° C (79° F) Maximum gradient 10% per hour IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 39: Altitude

    Table 9. Temperature and humidity requirements for storage expansion enclosure in a typical Information Technology (IT) or office environment Condition Parameter Requirement Temperature Operating range 10° - 35° C (50° - 95° F) Maximum rate of change 10° C (18° F) per hour Relative humidity (no Operating range 8% to 80%...

  • Page 40: Shock And Vibration Requirements

    Table 13. Random vibration power spectral density 2.0x10-7 2.2x10 2.2x10 2.2x10 2.2x10 2.2x10 2.2x10 2.2x10 2.2x10 Acoustic noise Table 14 on page 17 lists the maximum sound levels emitted by the storage subsystem. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 41: Electrical Requirements

    Table 14. EXP395 sound levels Measurement Level Sound power (normal operation) 6.5 bels Sound pressure (normal operation) 65 dBA These levels are measured in controlled acoustical environments according to ISO 7779 and are reported in accordance with ISO 9296. The declared sound power levels indicate an upper limit, below which a large portion of machines operate.

  • Page 42: Heat Output, Airflow, And Cooling

    To ensure correct airflow in each rack, the rack filler plates must be installed in unused positions. Also, all the gaps in the front of the racks must be sealed, including the gaps between the storage expansion enclosures. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 43: Example Of Cold Aisle/Hot Aisle Rack

    back T42 racks front Perforated tiles or gratings 1220 mm cold Cold aisle aisle width front 2440 mm between T42 racks center lines of hot and cold aisle back Hot aisle back T42 racks front Airflow Figure 8. Example of cold aisle/hot aisle rack configuration Chapter 1.
  • Page 44 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 45: Chapter 2. Installing The Exp395

    2. Install the support rails in the rack. See “Installing the support rails” on page 3. Install the EXP395. See “Installing the EXP395 into a rack” on page 28. 4. Cable the EXP395 to other EXP395s or to a DS3950. See Chapter 3, “Cabling the EXP395,” on page 31.

  • Page 46: Handling Static-Sensitive Devices

    2. Move the storage expansion enclosure to the site. 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 DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 47: Tools And Hardware Required

    IBM reseller before proceeding. 4. Verify that you have the following software: v The correct version of the IBM DS Storage Manager software. See “EXP395 hardware and software compatibility” on page 10. v DS3950 controller firmware that ships with the storage expansion enclosure.

  • Page 48: Preparing The Rack

    Review the documentation that comes with your rack enclosure for safety and cabling considerations. v If you are using a non-IBM rack or cabinet, review the information in Appendix C, “Specifications for non-IBM rack installation,” on page 113. v Do not extend more than one device out of the rack cabinet at the same time.

  • Page 49: Front Rack Mounting Template

    EXP395 FRONT Install second ---> <---Install second Bezel Bezel (Front Right) (Front Left) Rack Mounting Template <--- Install first Install first ---> Install first ---> <--- Install first Rail assembly Rail assembly (Front Left) (Front Right) Install second ---> <---Install second Figure 9.

  • Page 50: Rear Rack Mounting Template

    Where you place the support rails in the rack depends on where you intend to position the storage expansion enclosure. Note: If you are using a non-IBM rack or cabinet, review the information in Appendix C, “Specifications for non-IBM rack installation,” on page 113.
  • Page 51 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 9 on page 25 and Figure 10 on page 26 to locate the proper rack mounting holes for installing the support rails into the rack.

  • Page 52: Installing The Exp395 Into A Rack

    ≥ 55 kg (121.2 lb) CAUTION: Use safe practices when lifting. 1. Put on anti-static protection, and keep it on while performing all of the remaining procedures in this chapter. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 53: Installing The Exp395

    2. Remove the four screws from the rails (two screws in each rail). See 4 in Figure 11 on page 28. If you do not remove these screws, the storage expansion enclosure will not fit securely. 3. Place the storage expansion enclosure in the rack. Note: If you have removed the FRUs from the EXP395, you should be able to lift the unit into the cabinet with the help of one other person.

  • Page 54: Securing The Storage Expansion Enclosure To The Rack

    Figure 13. Securing the storage expansion enclosure to the rack 5. Continue with “Cabling the EXP395” on page 32. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 55: Chapter 3. Cabling The Exp395

    Both ESM enclosure ID numbers are identical under normal operating conditions. If the enclosure IDs in your DS3950 subsystem configuration are not currently set to have unique single digit (x1) values for the enclosures in the same redundant drive channel/loop pair, make the changes to the enclosure IDs using the DS Storage Manager software.

  • Page 56: Fibre Channel Loop And Id Settings

    Power cabling: The storage expansion enclosure uses two standard power cables. You can connect the power cables to a primary power unit inside the IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 57: Installing Sfp Modules

    DS3950 storage subsystem or other storage expansion enclosures. Note: IBM SFP options have been tested and approved for the IBM DS storage products. For optimal performance and compatibility, always use IBM SFP options when installing the IBM DS products.

  • Page 58: 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 16 on page 35. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 59: Removing Sfp Modules

    Wire Protective module Figure 16. 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 37. 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 60: Handling Fibre-Optic Cables

    The following are the supported maximum cable lengths: – 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 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 61: 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 DS3950 storage subsystem See Figure 20 for an illustration of the LC-LC fibre-channel cable.

  • Page 62: Connecting An Lc-Lc Cable To An Sfp Module

    EXP395. The cable connector is keyed to ensure it is inserted into the SFP module correctly. Holding the connector, push in the cable until it IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 63: Removing An Lc-Lc Fibre-Channel Cable

    6. Connect this end of the LC-LC cable to an SFP module that is installed in a separate EXP395 or other DS3950 storage expansion enclosures. Removing an LC-LC fibre-channel cable Complete the following steps to remove an LC-LC fibre-channel cable:...

  • Page 64: Cabling Rules And Recommendations

    For example, if you have two EXP395s to be cabled to the DS3950, instead of cabling both EXP395s to one drive port of a drive channel, distribute the enclosures to all drive ports, which results in one enclosure per drive port of a drive channel.

  • Page 65: Cabling The Exp395 To A Storage Subsystem

    Installation, User's, and Maintenance Guide. Complete the following steps to cable the EXP395 to a supported DS3950 storage subsystem: 1. Install an SFP module in the drive mini hub port on the back of a DS3950 Storage Subsystem. Chapter 3. Cabling the EXP395...

  • Page 66: Installing An Sfp Module And Lc-Lc Cable In A Supported Ds3950 Storage Subsystem

    Note: Figure 26 shows a DS3950 Storage Subsystem. The DS3950 Storage Subsystem is shown for illustrative purposes only. Figure 26. Installing an SFP module and LC-LC cable in a supported DS3950 storage subsystem 3. Install an SFP module in the SFP port on the back of the EXP395; then, connect the other end of the LC-LC cable into the SFP module, as shown in Figure 27.

  • Page 67: Exp395 Loop Redundancy

    Note: The term drive loop or drive loop pair used in this publication might be referred to as a drive channel or drive channel pair when referring to a DS3950 Storage Subsystem in the DS3950 Storage Subsystem Installation, User's and Maintenance Guide and other DS Storage Subsystem publications.

  • Page 68: Cabling The Power Supply

    EXP395 Figure 28. Correct EXP395 redundant drive loop configuration To create drive loop A (of the DS3950 redundant drive loop) shown in Figure 28, you would perform the following steps: 1. Make a fibre-channel connection from the DS3950 Storage Subsystem to port 1B of the first storage expansion enclosure (connection 1 ).

  • Page 69: Chapter 4. Operating The Exp395

    DS3950 Storage Subsystem, and after all configuration sessions. It is also recommended that you set a regular schedule of periodic health check evaluations in order to keep your DS3950 code current and to preserve optimal data access and performance. 1. Monitor the Recovery Guru in the DS Storage Manager client for any obvious storage subsystem errors or problem conditions.

  • Page 70: Web Pages

    Maintain an up-to-date storage subsystem profile for your DS3950 storage configuration. Save the profile to a server disk that will remain accessible in case of a DS3950 storage configuration failure. Do not save the profile only to a LUN in the DS3950 Storage Subsystem.

  • Page 71: Powering On The Exp395

    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 72 LED of the ESM port that connects directly to the storage subsystem drive port should be lit. 6. Turn on the power switch on the back of the DS3950 storage subsystem. See Figure 3 on page 7 for location of the power switch.

  • Page 73: Firmware Updates

    ESM firmware upgrades. Save the storage subsystem profile and all configuration (*.cfg) files to a server disk that will remain accessible in the event of a DS3950 storage configuration failure. Do not save these files only to a LUN in the DS3950 Storage Subsystem.

  • Page 74: Finding Controller, Storage Expansion Enclosure, And Drive Information

    ESM firmware to be upgraded first to a particular version, or the controller firmware download might require the halting of I/Os to the DS3950's logical drives. Failure to observe the limitations, prerequisites, and dependencies in the README file might result in a loss of data access.

  • Page 75: Checking The Leds

    If so, go to step 5. Attention: If the fault requires you to power off an attached storage expansion enclosure, you might need to cycle the power on the DS3950 storage subsystem and all remaining storage expansion enclosures in the storage subsystem.

  • Page 76: Front Leds

    ESM and on the drive's physical location in the storage expansion enclosure. 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 DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 77: Rear Leds

    exp81021 Figure 30. Front LEDs Table 17. Front LEDs and controls Number Normal Status Problem Status Drive Activity LED On (not flashing) - No data is being processed Flashing - data is being processed Drive Fault LED On (not flashing) Note: In certain ESM Flashing - Drive, volume, firmware versions, the...

  • Page 78: Seven-Segment Numeric Display

    The numeric display consists of two seven-segment LEDs that provide information about enclosure identification and diagnostics. Figure 32 on page 55 shows the numeric display and the diagnostic LED. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 79: Numeric Display Leds

    Seven- segment display 76041 Diagnostic LED Figure 32. 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 80 Fibre different than the rate Channel rate that is switch setting. Power different than the cycle required for enclosure data rate new rate to take setting effect IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 81: Powering Off The Storage Expansion Enclosure

    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 82 EXP395, complete the following steps: 1. Stop all I/O activity to each storage expansion enclosure. 2. Remove the front cover from the storage expansion enclosure, if applicable. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 83 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 84: Performing An Emergency Shutdown

    2. Check the LEDs. Make note of any Needs Attention LEDs that are on so you can correct the problem when you turn on the power again. 3. Turn off all power supply switches, starting with the DS3950 storage subsystem first, and followed by the storage expansion enclosures. Then, unplug the power cables from the EXP395.

  • Page 85: Recovering From An Overheated Power Supply And Fan Unit

    Note: All of the EXP395 storage expansion enclosures must be powered on before the DS3950 storage subsystem. 5. The green LEDs on the front and the back of the EXP395 and DS3950 storage subsystem should remain lit. If other amber Fault LEDs light, see “Solving problems”...
  • Page 86 No - Go to step 8. 8. To cycle the power, turn off both power switches on the back of each storage expansion enclosure, wait two minutes, turn on both power switches. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 87 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. Chapter 4. Operating the EXP395...
  • Page 88 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 89: Chapter 5. Installing And Replacing Components

    1. The term drive loop or drive loop pair used in this publication might be referred to as a drive channel or drive channel pair when referring to a DS3950 Storage Subsystem in the DS3950 Storage Subsystem Installation, User's and Maintenance Guide and other DS3950 Storage Subsystem publications.
  • Page 90 FRUs to intermittently appear as failed and then reappear in an optimal state, falsely indicating that the power supply FRUs are bad. Figure 33 on page 67 shows an example of a DS3950 storage subsystem configured with redundant drive loop pairs.

  • Page 91: Cabling The Exp395 To An Existing And

    Figure 33. Cabling the EXP395 to an existing and configured drive loop The dashed lines in Figure 33 show how to add a new EXP395 to an existing DS3950 configuration with EXP395s. To add the new EXP395 shown in Figure 33, perform the following steps: 1.

  • Page 92: Working With Hot-Swap E-Ddms

    8. Insert the drives into the drive slots two at a time. Wait until the drives have spun up and been recognized by the DS3950 before inserting the next two drives from the Physical View of the Subsystem Management window.
  • Page 93 Attention Before you power on a DS3950 storage subsystem without any internal drive slots, the DS3950 must be cabled to at least one storage expansion enclosure populated with at least two E-DDMs. If at least two E-DDMs are not installed in each attached storage expansion enclosure when you power...

  • Page 94: Installing Hot-Swap Hard Disk Drives

    1. Read the documentation that comes with the E-DDM. 2. Check for Fault LEDs shown in Figure 34 on page 71. If any amber LEDs are lit, see “Solving problems” on page 93. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 95: Hot-Swap E-Ddm Leds

    Figure 34. Hot-swap E-DDM LEDs 3. Determine the bay into which you want to install the E-DDM. 4. Remove the blank tray by completing the following steps: a. Release the latch on the E-DDM FRU by pressing on the inside of the bottom of the tray handle.

  • Page 96: Replacing Hot-Swap Hard Disk Drives

    Push the tray handle down into the closed (latched) position. 7. Check the E-DDM LEDs for the following: IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 97: Replacing Multiple E-Ddms

    Using this method, you can replace the E-DDMs while the EXP395 and the DS3950 are running, eliminating the down time that is required if you replace all of them at once. However, this method is more risky because you can lose data if the drive restoration or storage subsystem reconfiguration process fails.

  • Page 98: Replacing All E-Ddms At The Same Time

    E-DDMs is lost when you replace them; therefore, you must back up all data that is currently on the E-DDMs. This procedure also requires you to turn off the EXP395 and the DS3950, which makes the storage subsystem (and any attached storage expansion enclosures) inaccessible to other users.
  • Page 99 1) All of the green Drive activity LEDs on the front of the storage subsystem (and on all attached EXP395s) are not flashing. 2) The green Cache active LEDs are off. Refer to the IBM System Storage DS3950 Storage Subsystem Installation, User's, and Maintenance Guide for the location of the Cache active LEDs.

  • Page 100: Replacing The Drives One At A Time

    Your software documentation regarding drive upgrades and installation v The documentation that comes with the new drives IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 101 Read all precautionary notes, kit instructions, and other information. Kit instructions often contain the most current information regarding the drives and their installation, plus upgrade or servicing procedures. Compare the kit instructions with this procedure to determine if you need to modify this procedure.

  • Page 102: Replacing A Power Supply And Fan Unit

    Each power supply and fan unit has a built-in sensor that detects the following conditions: v Over-voltage IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 103 v Over-current v Overheated power supply If any of these conditions occurs, one or both power supplies will shut down. If the power remains off after the condition that causes it to go off, make sure that the environment is optimal (no overheating has occurred, all electrical outlets are working, and so on).
  • Page 104 LED is off. For more information on the Service Action Allowed LED, see “Service Action Allowed Status LED” on page 65. Statement 1: IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 105 DANGER Electrical current from power, telephone, and communication cables is hazardous. To avoid a shock hazard: v Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. v Connect all power cords to a properly wired and grounded electrical outlet.

  • Page 106: Replacing A Power Supply And Fan Unit

    Management Window and complete the recovery procedure. If a problem is still indicated, contact IBM Customer and Technical Support. v No - Go to step 20. 20. Create, save, and print a new storage subsystem profile. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 107: Replacing An Environmental Service Module (Esm)

    Storage Manager Event Monitor service must be running when the new ESM is inserted. For instructions to start this service, see the IBM System Storage DS Storage Manager Version 10 Installation and Host Support Guide for your operating system. Do not...

  • Page 108: Removing And Replacing An Environmental Service Module (Esm)

    ESM into the storage expansion enclosure. As you slide the ESM into the empty slot, make sure the guide pins IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 109: Replacing An Sfp Module

    SFP modules. 15. Use the DS Storage Manager Client to open a Subsystem Management window to the DS3950 on which the EXP395 ESM was replaced. click the Recovery Guru or the Environment Status icon of the drive expansion enclosure on which you replaced the ESM.

  • Page 110: Replacing An Sfp Module

    10. Check the Bypass and Fault LEDs for the new SFP module. 11. Based on the status of the Bypass and Fault LEDs, choose one of the following steps: IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 111: Replacing A Midplane

    Before you begin, ensure that you wear an anti-static wrist strap. Perform the following steps to replace a midplane: 1. Complete the power-off sequence described in “Turning off the EXP395” on page 57 ensuring that the DS3950 storage subsystem is turned off before any attached storage expansion enclosures. Statement 5:...
  • Page 112 E-DDM FRUs from vibrations or sudden shocks. 10. Use a #1 Phillips screwdriver to loosen the four front cage frame screws on the midplane, as shown in Figure 39 on page 89. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 113: Front Cage Frame Screw Locations

    Front cage frame screws 810midpl Front cage frame screws Figure 39. Front cage frame screw locations 11. On the back of the EXP395, remove the four Phillips screws (two screws on each side) that hold the sides of the EXP395 chassis to the sides of the rails. 12.

  • Page 114: Screws Holding The Top And Bottom Sides Of

    22. Re-insert the ESMs and reconnect the fibre channel cables. 23. Re-insert the power supply and fan units and reconnect the power supply cords. 24. Power on the EXP395. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 115 25. Wait at least 3 minutes and then power on the DS3950 storage subsystem. Verify the status of the configuration using LEDs and the DS Storage Manager client program. 26. After removing the faulty cage frame with midplane assembly, transpose the...
  • Page 116 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 117: Chapter 6. Hardware Maintenance

    Use the indicator lights, the diagnostics and test information, the symptom-to-FRU index, and the connected server HMM to diagnose problems. The PD maps found in the IBM System Storage DS3950 Problem Determination Guide provide you with additional diagnostic aids. Solving problems This section contains information to help you solve some of the problems you might have with your storage expansion enclosure.

  • Page 118: Symptom-To-Fru Index

    ESM failure If the ESM Fault and Service Action LEDs are lit, replace the ESM. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 119 Check for and resolve one of the following situations: green LEDs are v EXP395 is not connected to the DS3950 slowly flashing v DS3950 does not have the correct firmware version All green LEDs All FRUs Subsystem power is Check that all storage expansion...
  • Page 120 (Global FRUs has function in the DS Storage Summary Fault intermittent Manager Client Subsystem LED) problems. Management window and the Major Event Log to troubleshoot the problem. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 121 All drive FRUs The EXP395 is Verify that the EXP395 is connected to an connected to a supported DS3950 unsupported storage subsystem. Use the steps storage subsystem. “Finding controller, storage expansion enclosure, and drive information”...
  • Page 122 Hardware failure If any other LEDs are lit, replace the midplane. Contact an IBM technical support representative. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 123 Table 21. Symptom-to-FRU index (continued) Problem indicator Component Possible cause Possible solutions Green LED slowly Drive FRUs The DS3950 was not Perform one of the following flashing one per 2 powered on, or all actions: seconds fibre-channel v Power on the storage connections subsystem.

  • Page 124: Parts Listing

    Refer to “Firmware updates” on page 49. Parts listing Figure 41 on page 101 and the following table provide a parts listing for the EXP395. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 125: Exp395 Storage Expansion Enclosure Parts List

    Figure 41. EXP395 storage expansion enclosure parts list Table 22. Parts listing (EXP395 storage expansion enclosure) Index EXP395 storage expansion enclosure FRU P/N Rail kit 41Y5152 68Y7561 AC power supply and fan unit FRU, 600 W 59Y5502 Blank drive module 42D3315 NEBS bezel 69Y2775...

  • Page 126: Determining Basic Information Of Drive Frus

    39M5377 Determining basic information of drive FRUs IBM might ship drive FRUs of higher capacity than that of the drive FRUs they replace. These new drives are programmed in manufacturing to give the same capacity as the drive FRUs being replaced.

  • Page 127: An Ibm Hologram Label Example

    Refer to the drive properties given here. Do not refer to the drive properties given here. Figure 42. An IBM hologram label example Chapter 6. Hardware maintenance...
  • Page 128 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 129: 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 130: Storage Subsystem And Controller Information Record

    For a sample information record, see Table 24 on page 107. Table 23. Storage subsystem and controller information record Storage subsystem Management Controllers-Ethernet and IP Host-IP address and name method addresses, and host name host name IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 131: Sample Information Record

    Sample information record Table 24 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 24. Sample information record Storage Management Controllers-Ethernet and IP Host-IP address subsystem name method addresses, and host name and host name...

  • Page 132: Installed Device Records

    Attention: If you replace a hard disk drive in the wrong drive bay it might cause a loss of data. Table 25. Hard disk drive record Replaced hard disk drive serial Bay Number Hard disk drive serial number number IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 133: 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. 2009, 2013...

  • Page 134: Front Rack Mounting Template

    Install first ---> Install first ---> <--- Install first Rail assembly Rail assembly (Front Left) (Front Right) Install second ---> <---Install second Figure 43. Front rack mounting template IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 135: Rear Rack Mounting Template

    EXP395 REAR Rack Mounting Template Rail mounting guide Rail assembly Rail assembly (Rear Left) (Rear right) ® Printed in the U.S.A Figure 44. Rear rack mounting template Appendix B. Rack mounting template...
  • Page 136 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 137: Appendix C. Specifications For Non-Ibm Rack Installation

    Certified products should have the NRTL logos or marks somewhere on the product or product label. However, proof of certification must be made available to IBM upon request. Proof consists of such items as copies of the NRTL license or certificate, a CB Certificate, a Letter of Authorization to apply the NRTL mark, the first few pages of the NRTL certification report, Listing in an NRTL publication, or a copy of the UL Yellow Card.
  • Page 138 9. If the rack or cabinet or any products installed in the cabinet had safety or weight labels applied by the manufacturer, they must be intact and translated into the languages required for the country in which the product is installed. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 139: Rack Specifications

    10. The rack or cabinet configuration must comply with all IBM requirements for "safe to service" (contact your IBM Installation Planning Representative for assistance in determining if the environment is safe). There must be no unique maintenance procedures or tools required for service.

  • Page 140: Top View Of Non-Ibm Rack Specifications

    44.45 mm (1.75 in.) apart on center). The front and rear mounting flanges in the rack or cabinet must be 719 mm (28.3 in.) apart and the internal width bounded by the mounting flanges at least 494 mm (19.45 in.), for the IBM ™...

  • Page 141: Rack Specifications Dimensions, Top Front

    Rack Figure 47. Rack specifications dimensions, bottom front view 2. The rack or cabinet must be capable of supporting an average load of 15.9 kg (35 lb.) of product weight per EIA unit. Appendix C. Specifications for non-IBM rack installation...
  • Page 142 You must use the IBM mounting rails that are shipped with the IBM product to install it in the rack. The mounting rails that ship with IBM products have been designed and tested to safely support the product during operation and service activities as well as to safely support the weight of your drawer or device.
  • Page 143 The perforations should yield at least 34 percent minimum open area per square inch. Appendix C. Specifications for non-IBM rack installation...
  • Page 144 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 145: Appendix D. Power Cords

    The cord set should have the appropriate safety approvals for the country in which the equipment will be installed. IBM power cords for a specific country or region are usually available only in that country or region.
  • Page 146 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 DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 147 Table 26. IBM power cords (continued) IBM power cord Feature part number code Description Used in these countries or 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 DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 149: Appendix E. Additional Ds3950 Documentation

    For educational information about the DS3950 and other IBM System Storage products, go to http://ibmdsseriestraining.com/. The following tables present an overview of the IBM System Storage DS 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: Ds3950 Storage Subsystem Library

    ATA Intermix Premium Feature Installation Overview DS3950 storage subsystem library Table 28 associates each document in the DS3950 storage subsystem library with its related common user tasks. Table 28. DS3950 storage subsystem document titles by user tasks Title User Tasks...

  • Page 151: Ds4800 Storage Subsystem Library

    Diagnosis and Installation Installation Administration Maintenance IBM System Storage 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 Appendix E. Additional DS3950 documentation...

  • Page 152: Ds4700 Express Storage Subsystem Library

    EXP810 and EXP420 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 DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 153: Ds4500 Storage Subsystem Library

    Planning Hardware Software Configuration Operation and Diagnosis and 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 Appendix E. Additional DS3950 documentation...

  • Page 154: Ds4400 Storage Subsystem Library

    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 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 155: Ds4300 Storage Subsystem Library

    IBM TotalStorage DS4300 Rack Mounting Instructions IBM TotalStorage 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 Appendix E. Additional DS3950 documentation...

  • Page 156: Ds4200 Express Storage Subsystem Library

    Maintenance Guide 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 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 157: Ds4100 Storage Subsystem Library

    Table 35. DS4100 storage subsystem document titles by user tasks Title User Tasks Planning Hardware 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 Appendix E. Additional DS3950 documentation...

  • Page 158: Storage Expansion Enclosure Documents

    IBM System Storage DS4000 EXP420 Storage Expansion Enclosure Installation, User's, and Maintenance Guide IBM System Storage DS4000 Hard Drive and Storage Expansion Enclosures Installation and Migration Guide IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 159: Other Ds5000 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 160 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 161: Appendix F. 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. 2009, 2013...
  • Page 162 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 DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 163: 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.

  • Page 164: Trademarks

    All statements regarding IBM's future direction or intent are subject to change or withdrawal without notice, and represent goals and objectives only. All IBM prices shown are IBM's suggested retail prices, are current and are subject to change without notice. Dealer prices may vary.

  • Page 165: 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 might differ from its retail version (if available) and might not include user manuals or all program functionality.

  • Page 166: Documentation Format

    In the request, be sure to include the publication part number and title. When you send information to IBM, you grant IBM a nonexclusive right to use or distribute the information in any way it believes appropriate without incurring any obligation to you.

  • Page 167: Industry Canada Class A Emission Compliance Statement

    Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. IBM is not responsible for any radio or television interference caused by using other than recommended cables and connectors or by unauthorized changes or modifications to this equipment.
  • Page 168 Technical Regulations, Abteilung M372 IBM-Allee 1, 71139 Ehningen, Germany Tele: +049 7032 15 2941 e-mail: lugi@de.ibm.com Generelle Informationen: Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55022 Klasse IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 169: Japan Voluntary Control Council For Interference (Vcci) Class A Statement

    Japan Voluntary Control Council for Interference (VCCI) Class A Statement Translation: This is a Class A product based on the standard of the VCCI Council. If this equipment is used in a domestic environment, radio interference may occur, in which case, the user may be required to take corrective actions. Japan Electronics and Information Technology Industries Association (JEITA) Statement Japanese Electronics and Information Technology Industries Association (JEITA)

  • Page 170: People's Republic Of China Class A Electronic Emission Statement

    Taiwan Class A Electronic Emission Statement Taiwan Contact Information IBM Taiwan Product Service Contact Info: IBM Taiwan Corporation 3F, No 7, Song Ren Rd., Taipei Taiwan Tel: 0800-016-888 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 171: Glossary

    AT-attached. Peripheral devices that are compatible adapter. A printed circuit assembly that transmits user with the original IBM AT computer standard in which data input/output (I/O) between the internal bus of signals on a 40-pin AT-attached (ATA) ribbon cable...
  • Page 172 See disk array router. each controller combined to form one pair of redundant drive channels or a redundant drive loop. Each drive DASD. See direct access storage device. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 173 ESM into an existing storage expansion enclosure in a DS4000 storage subsystem that supports FlashCopy. A premium feature for DS3950 that can automatic ESM firmware synchronization, the firmware make an instantaneous copy of the data in a volume.
  • Page 174 Also simultaneously. known as an Advanced Technology Attachment Interface (ATA). host bus adapter (HBA). An interface between the fibre-channel network and a workstation or server. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 175 Internet Protocol (IP). A protocol that routes data logical unit number (LUN). An identifier used on a through a network or interconnected networks. IP acts small computer system interface (SCSI) bus to as an intermediary between the higher protocol layers distinguish among up to eight devices (logical units) and the physical network.
  • Page 176 Web, intranets, or CD-ROM; and can be viewed with the Acrobat Reader, which is software from Adobe NVS. See nonvolatile storage. Systems that can be downloaded at no cost from the Adobe Systems home page. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 177 RVSD. See recoverable virtual shared disk. program temporary fix (PTF). A temporary solution SAI. See Storage Array Identifier. or bypass of a problem diagnosed by IBM in a current unaltered release of the program. SA Identifier. See Storage Array Identifier.
  • Page 178 A switch and the collection of devices access memory (DRAM), which must be regularly connected to it that are not in other groups. IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 179 switch zoning. See zoning. Presumably, the actual recipient is a software application running at the IP address and listening to synchronous write mode. In remote mirroring, an the port. option that requires the primary controller to wait for the acknowledgment of a write operation from the TSR program.
  • Page 180 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...

  • Page 181: Index

    18 DS4300 glossary 147 Copy Services Guide 125 Storage subsystem library 131 guidelines, fibre-optic cables 36 customer replaceable units (FRUs) 3 DS4400 Storage subsystem library 130 DS4500 Storage subsystem library 129 data sheet 106 © Copyright IBM Corp. 2009, 2013...
  • Page 182 34 support xxiii Small Form-Factor Pluggable modules loop redundancy 32 described 8 correct example 43 Small-form Factor Pluggable modules loop redundancy, described 43 replacing 85 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 183 76 list xxii Storage Manager premium feature activation xxii installing for use with IBM System SAN support xxiii Storage Productivity Center xxii SSIC xxii Storage Manager software switch support xxiii where to obtain xxi...
  • Page 184 IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide...
  • Page 186 Part Number: 46W6896 Printed in USA GA32-0956-04...

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