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Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem Hardware User's Manual

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  • Page 1 ™ Compaq StorageWorks...
  • Page 2 Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license. Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is subject to change without notice.

  • Page 3: Table Of Contents

    Related Documents ......................xi Text Conventions......................xii Symbols in Text ......................xiii Symbols on Equipment..................... xiii Rack Stability......................xv Getting Help........................xv Compaq Technical Support .................xv Compaq Website....................xvi Compaq Authorized Reseller ................xvi Product Description ....................1-1 Pedestal Features....................... 1-4 Pedestal Cabinet......................1-5 Pedestal Components....................1-7 StorageWorks Building Blocks (SBBs) ............
  • Page 4 Controller Overview ....................2-1 Controller Features ....................2-3 Controller Reset and LED Indicators ................2-8 Flexible RAID Set Configuration................2-9 Performance Enhancements ..................2-10 Custom Components ..................2-10 Efficient Write and Read Algorithms...............2-11 RAID Levels Supported ..................2-13 RAID 0 ......................2-14 RAID 1 ......................2-16 RAID 0+1 ......................2-16 RAID 4 ......................2-18 RAID 5 ......................2-19 Just a Bunch of Drives (JBOD)................2-21...
  • Page 5 Product Description ....................4-1 Expansion Pedestal Cabinet..................4-2 Expansion Pedestal Components................4-4 Reconfiguring Base Pedestal UltraSCSI Bus ............4-6 Second Controller Option Kit................... 5-2 Installing the Upgrade....................5-3 Saving Existing Configuration ................5-3 Updating Firmware.................... 5-4 Shutting Down the RA3000 ................5-6 Installing Two SIMMs into Second Controller..........
  • Page 6 Figure 2-4. RAID 0 write ..................2-15 Figure 2-5. Diagram of a RAID 1 write ..............2-16 Figure 2-6. Diagram of RAID 0+1 write..............2-17 Figure 2-7. Diagram of a RAID 4 write ..............2-18 Figure 2-8. Diagram of a RAID 5 write ..............2-20 Figure 3-1.
  • Page 7 Table 1 Related Documents..................xi Table 1-1 RAID Array 3000 Pedestal Part Numbers and Model Descriptions ....................1-3 Table 1-2 Single Host, Single Adapter Cabling ............. 1-15 Table 1-3 Single Host, Dual Adapter/Dual Controller Cabling ......1-16 Table 1-4 Single Host, Single Adapter/Dual Controller (Y-cable connection cabling) ....................

  • Page 9: Product Description

    This guide is designed to for installers and operators of Compaq StorageWorks RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide. This document is written for installers and operators. This guide contains the following information: Product Description Pedestal Features Pedestal Cabinet...

  • Page 10: Controller Overview

    Controller Overview Controller Features Controller Reset and LED Indicators Flexible RAID Set Configuration Performance Enhancements RAID Levels Supported Redundant Operation Environmental Pedestal Status and Power LEDs SBB Status LEDs Controller LEDs EMU Error Reporting Replacing Components (FRUs) Differential/Wide UltraSCSI Bus Replacing the Controller Memory Cache Modules Product Description Expansion Pedestal Cabinet...
  • Page 11 In addition to this guide, the following documentation is useful to the reader:...
  • Page 12 This document uses the following conventions to distinguish elements of text: Keys Keys appear in boldface. A plus sign (+) between two keys indicates that they should be pressed simultaneously. User input appears in a different typeface and in uppercase. FILENAMES File names appear in uppercase italics.
  • Page 13 The following symbols are found in the text of this guide to indicate different types of information. The following symbols are placed on equipment to indicate the presence of potentially hazardous conditions:...
  • Page 14 This is a test...

  • Page 15: Compaq Website

    In North America, call the Compaq Technical Phone Support Center at 1-800-OK-COMPAQ. This service is available 24 hours a day, 7 days a week. For continuous quality improvement, calls may be recorded or monitored.

  • Page 16: Compaq Authorized Reseller

    Be sure to have the following information available before you call Compaq: Technical support registration number (if applicable) Product serial number Product model name and number Applicable error messages Add-on boards or hardware Third-party hardware or software Operating system type and revision level The Compaq website has information on this product.

  • Page 17: Product Description

    Chapter Product Overview This chapter provides an overall description of the RAID Array 3000 Storage System and its components. Examples of Host/Storage System connections and a list of technical and environmental specifications are included at the end of the chapter. NOTE: This guide is the Hardware User’s Guide.
  • Page 18 1-2 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide The RAID Array 3000 offering also includes option kits designed to increase the storage capacity and enhance the performance of the subsystem. The first is an expansion pedestal (second enclosure) designed to increase the storage capacity of the subsystem to a maximum of 14 drives.
  • Page 19 Environmental Monitor Unit (EMU) board for environmental monitoring and error detection. Table 1-1 RAID Array 3000 Pedestal Part Numbers and Model Descriptions Compaq Part No. Item Description DS-SWXRA-GA RA3000 pedestal subsystem with one controller, 120 V. Includes: Seven-slot pedestal for wide UltraSCSI SBBs, one HSZ22...

  • Page 20: Pedestal Features

    1-4 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Pedestal Features The major features of the pedestal are: Two differential 16-bit UltraSCSI host buses Seven 3½-in disk drive SBB slots One dual-channel RAID array controller Second controller option for redundancy Expansion pedestal option allowing up to fourteen SBB slots in a dual- pedestal subsystem configuration Memory cache expansion option for the controller...
  • Page 21 Product Overview 1-5 The pedestal is equipped with an internal configuration switch, which sets the SCSI ID addresses of the controller and the storage devices. Figure 1-2. Pedestal front panel major components Figure 1-3. Pedestal rear panel power supplies...

  • Page 22: Pedestal Components

    1-6 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Pedestal Components The major components in the pedestal subsystem include: Dual-channel RAID array controller Two 16-bit single-ended split SCSI buses Environmental Monitor Unit (EMU) Two universal 50/60 Hz, 120 or 240 VAC power supplies Separate free-standing backup power supply (UPS) StorageWorks Building Blocks (SBBs) The pedestal has seven 3½-in disk drive SBB slots.

  • Page 23: Pedestal Power Supplies

    Product Overview 1-7 32 Logical Unit (LUNs) per host channel (some operating systems may be limited to 8) Support for Hot and Warm spare disks UPS-backed write caching Per LUN write cache/write back selection Configuration/Maintenance via RS-232 or host SCSI channel using StorageWorks Command Console (SWCC) Update of firmware via host channel Pedestal Power Supplies...

  • Page 24: Environmental Monitor Unit (Emu)

    1-8 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide The UPS has its own installation, operation, and service manual. The manual describes the UPS in detail and is part of the documentation set enclosed with your subsystem. Environmental Monitor Unit (EMU) The EMU is an internal circuit board that monitors the operation of the pedestal.
  • Page 25 Product Overview 1-9 Figure 1-5 shows the Pedestal rear panel components. External Host #0 Host #1 Fault Controller (Top) Controller (Bottom) 3000-23A Figure 1-5. Pedestal rear panel components...

  • Page 26: Ultrascsi Buses

    1-10 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide UltraSCSI Buses The pedestal contains two, 16-bit, single-ended, wide UltraSCSI buses (factory-configured as a split bus) that connects the controllers to the disk drives. The split-bus arrangement is divided into two-bus paths designated device port 0 and device port 1 as shown in Figure 1–6.
  • Page 27 Product Overview 1-11 The subsystem can be reconfigured for through-bus operation by modifying the bus and resetting the internal configuration switch. The information needed to reconfigure the bus from split-bus to a through-bus configuration is described in Chapter 4 “Expansion Pedestal Option”. 3000-38 Figure 1-7.

  • Page 28: Connecting The Pedestal To A Host System

    1-12 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Connecting the Pedestal to a Host System This section illustrates how to connect four possible RA3000/Host configurations. The configurations are: Single host, single adapter configuration Single host, dual adapter/dual controller configuration Single host, single adapter/dual controller configuration (using a Y-cable) Dual host, single adapter/single controller configuration...
  • Page 29 Product Overview 1-13 Figure 1-9 shows the Single host, Single Adapter Cabling diagram. Rear View of DS-SWXRA-GA Controller Pedestal Rear View of DS-SWXRA-GD Expansion Pedestal Host System Host Adapter shr-1311b Figure 1-9. Single host, single adapter cabling diagram Table 1-2 Single Host, Single Adapter Cabling Item Description...
  • Page 30 1-14 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 1-10 shows the Single host, Dual Adapter/dual Controller Cabling diagram. Rear View of DS-SWXRA-GA Rear View of DS-SWXRA-GA Controller Pedestal Controller Pedestal Rear View of Rear View of DS-SWXRA-GD DS-SWXRA-GD Expansion Pedestal Expansion Pedestal...
  • Page 31 Product Overview 1-15 Figure 1-11 shows the Single Host, Single Adapter/dual Controller (y-cable connection) Cabling diagram. Rear View of DS-SWXRA-GA Controller Pedestal Rear View of DS-SWXRA-GD Expansion Pedestal Host System Host Adapter shr-1313b Figure 1-11. Single host, single adapter/dual controller (y-cable connection) cabling diagram Table 1-4 Single Host, Single Adapter/Dual Controller...
  • Page 32 1-16 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 1-12 shows the Dual host, Single Adapter/single Controller Cabling diagram. Rear View of DS-SWXRA-GA Rear View of DS-SWXRA-GA Controller Pedestal Controller Pedestal Rear View of Rear View of DS-SWXRA-GD DS-SWXRA-GD Expansion Pedestal Expansion Pedestal...

  • Page 33: Specifications

    Product Overview 1-17 Specifications Table 1-6 Pedestal Technical Specifications Item Description Cabinet Pedestal with seven (7) disk SBB slots Expansion pedestal with an additional 7 slots Controller HSZ22 Controller cache 16 MB standard upgrades to 128 MB for a two controller pair Backup for cache Standard UPS Mirrored write-back cache...
  • Page 34 1-18 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Table 1-7 Pedestal Physical and Power Specification Physical Specifications Item Dimension Height 564 mm Width 254 mm Depth 494 mm Rear clearance (air exhaust) 305 mm Front clearance (door opening) 305 mm Weight (no devices) 19.5 kg...

  • Page 35: Raid Array Controller

    Chapter RAID Array Controller This chapter describes the major features and characteristics of the RAID array controller in the RAID Array 3000 subsystem. The number of devices supported by the controller may be limited by the enclosure. Controller Overview The RAID Array controller provides high performance, high-availability access to SCSI disk array subsystems along a UltraSCSI/Wide SCSI bus.
  • Page 36 2-2 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide The controller has two Single Inline Memory Module (SIMM) connectors for up to 64 MB of cache memory. The SIMM connectors form a mirrored pair when the controllers are configured in a redundant controller configuration; otherwise they are fully accessible by the controller.

  • Page 37: Controller Features

    RAID Array Controller 2-3 Controller Features The controller is the intelligent bridge between the host and the devices in the pedestal. From the host’s perspective, the controller is simply another SCSI device connected to one of its I/O buses. Consequently, the host sends its I/O requests to the controller just as it would to any other SCSI device.
  • Page 38 2-4 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide From the pedestal’s perspective, the controller receives the I/O requests from the host and directs them to the devices in the pedestal. Since the controller processes all the I/O requests, it eliminates the host-based processing that is typically associated with reading and writing data to multiple storage devices.
  • Page 39 RAID Array Controller 2-5 Stripesets (RAID 0) combine disk drives in serial to increase transfer or requests rates Mirrorsets (RAID 1) combine disk drives in parallel to provide a highly reliable storage unit RAID 4 provides striping with a fixed parity drive RAIDsets (RAID 5) combine disk drives in serial—...
  • Page 40 2-6 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Table 2-1 Controller Specifications continued Item Specifications Disk warm spare (not spinning) Yes, global warm spare Redundant power supplies Redundant controllers Controller failover Yes, automatic Controller hot spare Yes (Active/Passive mode) Controller hot plug Cluster support Yes, single (SCSI) bus cluster...

  • Page 41: Controller Reset And Led Indicators

    RAID Array Controller 2-7 Table 2-1 Controller Specifications continued Item Specifications Environmental Temperature 41ºF to 122ºF (5ºC to 50ºC) operating, -40ºF to 140ºF (-40ºC to +60ºC) non-operating Relative humidity 10% to 95% non-condensing (operating), 5% to 90%, non-condensing (non-operating) Physical size 8.55 in (21.7 cm) deep, 5.03 in wide, 1.6 in (4 cm) high Power requirements...

  • Page 42: Flexible Raid Set Configuration

    2-8 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 2-3 shows the front panel of the controller. Figure 2-3. Controller front panel Flexible RAID Set Configuration In addition to its flexible hardware design, the controller’s firmware offers the user the flexibility to configure RAID sets in several different ways: RAID sets can comprise drives from any drive channel and SCSI ID.

  • Page 43: Performance Enhancements

    RAID Array Controller 2-9 Each RAID set can be partitioned into smaller redundancy groups. The controller’s host LUN Mapping feature makes it possible to map RAID sets differently to each host port. You make the same redundancy group appear on different LUNs to different hosts, or make a redundancy group visible to one host but not to another.

  • Page 44: Efficient Write And Read Algorithms

    2-10 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Efficient Write and Read Algorithms Standard RAID write operations that involve parity, such as those in RAID levels 4 and 5, require multiple, time-consuming steps: 1. Read data from the parity drive. 2.
  • Page 45 RAID Array Controller 2-11 Write Gathering The controller will attempt to consolidate multiple writes destined for contiguous blocks and then write the entire data block in one operation. The controller stores the data in cache until it performs the write. Ideally, the controller will wait until it has gathered enough data to fill an entire stripe.

  • Page 46: Raid Levels Supported

    2-12 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide RAID Levels Supported The RAID Array 3000 controller supports the following RAID levels: Table 2-3 RAID Levels Supported RAID Level Description Striping without parity Mirroring Striping and mirroring Striping with fixed parity drive Striping with floating parity drive JBOD Just a Bunch of Drives...

  • Page 47: Raid 0

    RAID Array Controller 2-13 RAID 0 RAID 0 breaks up data into smaller chunks and writes each chunk to a different drive in the array. The size of each chunk is determined by the controller’s chunk size parameter, which you set in the course of creating a RAID set.

  • Page 48: Figure 2-4. Raid 0 Write

    2-14 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 2–4 shows a diagram of a RAID 0 write. Figure 2-4. RAID 0 write...

  • Page 49: Raid 1

    RAID Array Controller 2-15 RAID 1 RAID 1 (also known as mirroring or shadowing) takes data sent by the host and duplicates it on all the drives in an array. The result is a high degree of data availability, since you can lose all but one drive in the array and still have full access to your data.

  • Page 50: Figure 2-6. Diagram Of Raid 0+1 Write

    2-16 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 2-6 shows a diagram of RAID 0+1 write. Figure 2-6. Diagram of RAID 0+1 write In the event of a drive failure, a RAID 0+1 array will enter degraded mode and continue to operate by substituting the failed drive with its mirror.

  • Page 51: Figure 2-7. Diagram Of A Raid 4 Write

    RAID Array Controller 2-17 RAID 4 RAID 4 breaks up host data into chunks, calculates parity by performing an exclusive-or on the chunks, and then writes the chunks to all but one drive in the array and the parity data to the last drive. When the host requests data from the disk drives, the controller retrieves the chunks containing the addressed data, reconstitutes the data from the chunks, and passes the data to the host.
  • Page 52 2-18 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide In general, RAID 4 is best suited for applications such as graphics, imaging, or video that call for reading and writing large, sequential blocks of data. However, you may find that RAID 4 is preferable to RAID 5 even for applications characterized by many small I/O operations, such as transaction processing.

  • Page 53: Raid 5

    RAID Array Controller 2-19 RAID 5 RAID 5 addresses the bottleneck issue for barrages of widely scattered, small I/O operations. Like RAID 4, RAID 5 breaks up data into chunks, calculates parity, and then writes the chunks in stripes to the disk drives; saving one drive one each stripe for the parity data.

  • Page 54: Just A Bunch Of Drives (Jbod)

    2-20 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide While RAID 5 is ideally suited for applications with many, small I/O operations, there is no reason why it cannot function equally well for applications with large, sequential I/O operations. This makes RAID 5 an excellent all-purpose RAID level.

  • Page 55: Initialization

    RAID Array Controller 2-21 Initialization During initialization, the firmware in the RAID 3000 verifies that both controllers have consistent configurations including identical memory cache and system parameters. If the controller setups are incompatible, the set is not bound and each controller operates in stand-alone mode. Message Passing Information is shared between the two controllers by a collection of messages passed through the backplane connectors.

  • Page 56: Backup Power Management

    2-22 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Backup Power Management The controller must be connected to a backup battery and/or UPS to prevent the subsystem cache from being corrupted during unexpected losses of power. If no backup power supply is provided, the controller will remain off line and reject all I/O requests with a status of Check Condition/Hardware Error.

  • Page 57: Voltage Monitoring

    RAID Array Controller 2-23 Voltage Monitoring System Voltage The controller monitors the incoming system voltage levels and ensures that they are satisfactory for controller operation. The acceptable voltage levels are listed in Table 2–7. Table 2-7 Acceptable System Voltage Levels State Range Action...

  • Page 58: Temperature Monitoring

    2-24 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide 12 V Supply Voltage The controller monitors the incoming 12-volt levels and ensures that they are satisfactory for operation. The acceptable voltage levels are listed in Table 2–9. Table 2-9 Acceptable 12 Volt Levels State Range...

  • Page 59: Table 2-11 Acceptable Board Temperature Levels

    RAID Array Controller 2-25 Board Temperature The controller monitors the on-board operating temperature and ensures that they are satisfactory for controller operation. The acceptable temperature levels are listed in Table 2-11. Table 2-11 Acceptable Board Temperature Levels State Temperature Action Normal <...
  • Page 61 Chapter Maintenance This chapter describes how to interpret the status of the LEDs on the pedestal and use them as a troubleshooting aid during a pedestal malfunction. Both the pedestal LEDs and the LEDs on the major components are covered. The chapter also describes how to replace a Field Replaceable Unit (FRU) and how to reconfigure the SCSI bus.

  • Page 62: Pedestal Status And Power Leds

    3-2 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide The information in this chapter is divided into the following major sections: Pedestal status and power supply LEDs SBB status LEDs Controller LEDs EMU error reporting Replacing an FRU Reconfiguring the UltraSCSI bus Replacing the controller memory cache modules Pedestal Status and Power LEDs The pedestal is equipped with two front panel LEDs that monitor the following...

  • Page 63: Sbb Status Leds

    Maintenance 3-3 Figure 3-1 shows the Pedestal status LEDs. Figure 3-1. Pedestal status LEDs SBB Status LEDs Each disk drive SBB in the pedestal has two status LEDs— a green activity LED and an amber fault LED as shown in Figure 3–2. When the pedestal is operating properly, the activity LED is flashing indicating normal disk activity on the SCSI bus, and the fault LED is off.

  • Page 64: Controller Leds

    3-4 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Table 3-1 Disk Drive SBB Status LEDs Activity LED Fault LED Indication Drive is operating properly. Drive is inactive and operating normally. There is no fault. Fault status: drive is defective. Recommend that you replace the device.

  • Page 65: Emu Error Reporting

    Maintenance 3-5 EMU Error Reporting The primary function of the EMU is to detect and report conditions that can cause the pedestal to malfunction and to report malfunctions. To accomplish this, the EMU constantly monitors the following pedestal signals: +5 and +12 VDC AC input Power supply present Total power...

  • Page 66: Replacing Components (Frus)

    3-6 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Whenever any of the following error conditions occur, the amber fault LED on the front of the pedestal will turn on. When alarm switch S1 on the rear panel of the pedestal is in the up (enabled) position, the audible alarm will sound whenever one of the following conditions occurs: Loss of AC power to one of the power supplies Failure of either power supply fan...

  • Page 67: Removing The Pedestal Door

    Maintenance 3-7 Removing the Pedestal Door Proceed as follows to remove the pedestal door (Figure 3–3): 1. Unlock and open the door to a 90º angle in relation to the closed position. 2. Carefully lift up on the door until the hinge pins are against the top of the mounting holes.

  • Page 68: Figure 3-4. Replacing An Sbb

    3-8 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide CAUTION: Always use both hands when removing or inserting an SBB. Never remove a drive from the pedestal before it has completely spun down. Take care not to slam the replacement SBB into the pedestal enclosure. 1.

  • Page 69: Replacing A Power Supply

    Maintenance 3-9 Replacing a Power Supply You can replace a power supply without affecting pedestal operation using the following procedure: CAUTION: When you remove a power supply, the airflow through the SBBs is interrupted. Always install the replacement power supply as quickly as possible to prevent overheating.

  • Page 70: Replacing The Raid Array Controller

    3-10 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Replacing the RAID Array Controller Perform the following procedure to replace the RAID array controller (Figure 3–6): 1. Grip the two locking latches on the front panel of the controller and pull them forward until the controller disengages from its mounting slot.

  • Page 71: Replacing The Emu Board

    Maintenance 3-11 Replacing the EMU Board WARNING: Only qualified service personnel should replace the EMU. Dangerous voltages are exposed when the pedestal side panel is removed. Always power off the pedestal and remove the power cords before replacing the EMU. Tools required: Flat-blade or 3/16 in(5 mm) hex-head screwdriver # 10 TORX-head screwdriver...

  • Page 72: Figure 3-7. Remove Standoffs From Ups And External Fault Connectors

    3-12 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 3-7 shows how to remove standoffs from the UPS and external fault connectors. 3000-49 Figure 3-7. Remove standoffs from UPS and external fault connectors 11. Align the connectors on the replacement EMU with the connector holes on the rear panel and replace the mounting studs to secure the board (Do not over-tighten).

  • Page 73: Replacing The Ups

    (1 or 2, respectively) Table 3–2 lists the maximum SCSI bus lengths and the longest SCSI cables recommended by Compaq. NOTE: Because the bus length includes the cable plus the backplane distance inside the enclosure, the recommended maximum cable lengths listed are not the same as the...

  • Page 74: Reconfiguring The Scsi Bus

    3-14 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Table 3-2 SCSI Bus Length and External Cables Rate Bus Length Longest COMPAQ Cable Speed MT/s Mb/s Meters Feet Number Meters Feet Fast BN21K-23 BN21L-23 The SCSI bus in your pedestal is factory-configured as a split bus. One bus is designated bus D0 and the other as bus D1.
  • Page 75 Maintenance 3-15 The SCSI bus configuration switch selects the eight (0 – 7) SCSI bus configurations in the pedestal. Each bus configuration determines the slot device addresses (0 – 6) for both 8-bit and 16-bit devices. The pedestal is configured at the factory for split-bus operation (configuration switch set to 6). To change the configuration of the bus, you must remove the left side panel to gain access to the backplane and the configuration switch.

  • Page 76: Figure 3-8. Remove Screw And Panel

    3-16 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 3-8 shows how to remove the screw and panel. Figure 3-8. Remove screw and panel Figure 3–9 shows the location of the switch. Figure 3–10 shows the separate step switches to set the subsystem to the desired SCSI bus configuration (refer to the label at bottom of pedestal to cross-reference slot SCSI ID addresses with switch settings).

  • Page 77: Figure 3-9. Location Of Scsi Bus Configuration Switch

    Maintenance 3-17 NOTE: To decrease the configuration number, Press the upper switch to step the address down one address at a time (decrement) until the desired configuration number is displayed. To increase the configuration number, press the lower switch to step the address up one address at a time (increment) until the desired configuration number is displayed.

  • Page 78: Replacing The Controller Memory Cache Modules

    3-18 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Replacing the Controller Memory Cache Modules The two memory cache modules in the RAID controller are replaced by removing the controller from the pedestal to gain access to the modules. Then, place the controller on a flat working surface and proceed as follows: WARNING: To prevent an electrical discharge from damaging the SIMMs, always wear an ESD wrist strap connected to a suitable ground when handling...

  • Page 79: Figure 3-12. Release Locking Clips

    Maintenance 3-19 Figure 3-12 shows how to release the locking clips. Figure 3-12. Release locking clips Figure 3-13 shows how to remove the installed SIMM modules. Figure 13. Remove installed SIMM modules “ ” CAUTION: Ensure the side 1 side of the two replacement SIMMs is facing toward you when installing the modules in the following step.

  • Page 80: Figure 3-14. Install Replacement Simm

    3-20 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide 5. Installed the two replacement memory modules by aligning the module and connector pins (check alignment guide in center of module) and gently pivot the module the main controller board until it snaps into place (Figures 3–14 and 3–15).

  • Page 81: Product Description

    Chapter Expansion Pedestal Option This chapter describes the major features of the expansion pedestal option and how to connect the option to your RAID Array 3000 storage subsystem. Product Description The StorageWorks pedestal expansion option is designed to expand the storage capacity of the RAID Array 3000 subsystem (Figure 4–1).

  • Page 82: Expansion Pedestal Cabinet

    4-2 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 4-1 shows the Expansion Pedestal. Figure 4-1. Expansion pedestal Expansion Pedestal Cabinet The expansion pedestal cabinet is a modular, freestanding storage cabinet that is completely self contained with dual fan-cooled power supplies, an internal UltraSCSI single-ended extender module, and an internal EMU circuit board.

  • Page 83: Figure 4-2. Expansion Pedestal Slot Locations And Id Addresses

    Expansion Pedestal Option 4-3 There is a single 68-pin, VHDC female SCSI connector on the rear panel which interconnects the SBB expansion pedestal to the controller pedestal. The rear panel contains an alarm switch and an external fault condition connector. The expansion pedestal contains two interchangeable fan-cooled AC power supplies for redundant power.

  • Page 84: Expansion Pedestal Components

    4-4 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Figure 4-3 shows the rear panel power supplies. Figure 4-3. Rear panel power supplies Expansion Pedestal Components The expansion pedestal contains a 16-bit, wide/differential UltraSCSI bus, an Environmental Monitor Unit (EMU), a SCSI bus extender module, and two universal 50/60 Hz, 100–240 VAC fan-cooled power supplies.

  • Page 85: Figure 4-4. Emu Circuit Board Location

    Expansion Pedestal Option 4-5 The SCSI bus extender module extends the allowable electrical length of the bus to accommodate longer physical SCSI cable connections between the base and expansion pedestals. The EMU is an internal circuit board, which monitors the operation of the pedestal (Figure 4–4).

  • Page 86: Reconfiguring Base Pedestal Ultrascsi Bus

    4-6 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Reconfiguring Base Pedestal UltraSCSI WARNING: Only qualified service personnel should reconfigure the base pedestal. Dangerous voltages are present within the subsystem. To prevent electrical shock, always turn the subsystem off and disconnect the power cords before removing the side panel.

  • Page 87: Figure 4-5. Remove Side Cover From Base Pedestal

    Expansion Pedestal Option 4-7 7. Remove the side cover from the base pedestal (Figure 4–5). Figure 4-5. Remove side cover from base pedestal 8. Remove the bus terminator from backplane connector J11 ( Figure 4–6). SHR-1495 Figure 4-6. Remove SCSI bus terminator...

  • Page 88: Figure 4-7. Disconnect Scsi Cable

    4-8 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide 9. Remove the SCSI cable from device # 1 connector and backplane connector J16 ( Figure 4–7). SHR-1495 Figure 4-7. Disconnect SCSI cable...

  • Page 89: Figure 4-8. Connect Scsi Jumper

    Expansion Pedestal Option 4-9 10. Connect jumper cable 17-04166-03 between the backplane connector J11 and the backplane connector J16 (Figure 4–8). Connect Jumper Cable 3000-42 Figure 4-8. Connect SCSI jumper...

  • Page 90: Figure 4-9. Remove Connector Knockout Plate

    4-10 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide 11. Remove the knock-out plate located above the D1 OUT label on the rear panel of the base pedestal (Figure 4–9). Remove Knockout from D1 Out 3000-45 Figure 4-9. Remove connector knockout plate...

  • Page 91: Figure 4-10. Connect Scsi Cable

    Expansion Pedestal Option 4-11 12. Connect cable assembly 17-04454-01 between the D1 OUT bulkhead opening and the device # 1 backplane connector (Figure 4–10). Secure the bulkhead connector by tightening the two 6-32 SEM screws. Connect SCSI Cable 3000-43 Figure 4-10. Connect SCSI cable...

  • Page 92: Figure 4-11. Set Configuration Switch To 7

    4-12 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Set the bus configuration switch to 7 (Figures 4–11 and 4–12). 3000-44 Figure 4-11. Set configuration switch to 7 Figure 4-12. Configuration switch...

  • Page 93: Figure 4-13. Reconfigured Scsi Bus Addresses

    Expansion Pedestal Option 4-13 Figure 4–13 shows the reconfigured SCSI bus addresses of the expanded subsystem Figure 4-13. Reconfigured SCSI bus addresses...

  • Page 94: Figure 4-14. Connect Scsi Cable Between Pedestals

    4-14 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide 13. Reinstall the side panel on the base pedestal. 14. Connect the HD68-to-HD68 SCSI cable from the D1 OUT connector on the base pedestal to the D1 IN connector on the rear of the expansion pedestal as shown in Figure 4–14.

  • Page 95: Figure 4-15. Power Cable Connections

    Expansion Pedestal Option 4-15 15. Make the power cable connections between the expansion pedestal, the UPS, and the AC power source (Figure 4–15). Base Pedestal Connector Power Expansion Pedestal Power Power 3000-50 Figure 4-15. Power cable connections CAUTION: If you want to maintain the existing RAID level configuration, three drives must be relocated from the base pedestal to specific slots in the expansion pedestal as described in step 13.

  • Page 96: Figure 4-16. Transfer Drives From Base To Expansion Pedestal

    17. Install the new drives in the remaining slots of each pedestal to complete the installation. 18. Power up the UPS and the two pedestals and then proceed to the Compaq StorageWorks RAID 3000 Configuration and Maintenance Guide to configure the expanded subsystem.
  • Page 97 Chapter Second Controller Option This chapter describes how to install a second RAID controller in the RAID Array 3000 pedestal. The second controller option adds a fail/safe feature to your storage subsystem. The chapter also contains a procedure describing how to configure the subsystem for dual-controller operation when only one serial port is available on the host.

  • Page 98: Second Controller Option Kit

    5-2 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Second Controller Option Kit Perform an inventory of the items contained in the second controller kit option. The kit should contain the following: RAID Array 3000 controller For option kit DS-HSZ22-AA, 3 SIMMs For option kit DS-HSZ22-AB, 4 SIMMs CD with new firmware Model label...

  • Page 99: Installing The Upgrade

    Second Controller Option 5-3 Installing the Upgrade WARNING: To prevent an electrical discharge from damaging the SIMMs, always wear an ESD wrist or foot strap connected to a suitable ground when handling the memory modules. NOTE: You can upgrade your firmware using the SCSI or network connection methods. These methods provide the fastest way to upgrade your firmware.

  • Page 100: Updating Firmware

    5-4 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide A Save Configuration screen with a Save to File field appears as shown in Figure 5-3. The example in Figure 5-3 shows the file name as c:\config1. Enter your file name in the Save to File field and click Save. Figure 5-3.

  • Page 101: Figure 5-5. Firmware Update Dialog Box

    Second Controller Option 5-5 A window will appear asking you to specify the firmware file that you want to load (Figure 5-5). This file resides on the CD supplied with the controller kit option. You can easily identify Firmware software by its .FDI extension. Enter the .FDI file name (for example, D:\FIRMWARE\XXX.FDI), then click Start Update.

  • Page 102: Shutting Down The Ra3000

    5-6 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide 6. Choose menu item (2). “Change serial baud rate”. Select 38400. When presented with the “Please change your baud rate and press Return” message, do so from within HyperTerminal via the File\Properties menu, then choose Configure.

  • Page 103: Installing Two Simms Into Second Controller

    Second Controller Option 5-7 Installing Two SIMMs into Second Controller 1. Install two of the SIMM modules into the second controller (make sure all SIMM modules are of the same type) by aligning the connector pins and inserting the modules into the SIMM module connectors as shown in Figure 5-6.

  • Page 104: Replacing Existing Controller

    5-8 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Replacing Existing Controller 1. Replace the existing controller with the new controller (Figure 5-8 to remove). Figure 5-8 Remove controller from top slot NOTE: Ensure that you install the new controller in the same slot as the existing controller removed in step 1.

  • Page 105: Restoring The Configuration

    Second Controller Option 5-9 Restoring the Configuration To restore your configuration to the new controller: 1. Restart SWCC in the Serial Mode (refer to the Getting Started RAID Array 3000 Installation Guide for your host system guide for instructions). 2. Select the Storage pull-down menu from the Toolbar, then choose Controller.

  • Page 106: Updating Firmware On Second Controller

    5-10 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide The saved configuration screen with a Restore from File field appears as shown in the example of Figure 5-10. Figure 5-10. Restored configuration example NOTE: Restoring the configuration in the following step may take up to 5 minutes. 4.

  • Page 107: Installing Original Controller

    Second Controller Option 5-11 Installing Original Controller 1. If installing option kit DS-HSZ22-AA, add the second SIMM to the original controller. If installing option kit DS-HSZ22-AB, replace the existing SIMM with the two remaining SIMMs supplied with the kit. (see “Install Two SIMMs Into Second Controller” for instructions). 2.

  • Page 108: Configuring The Ra3000 For The Active Mode Of Operation

    5-12 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Configuring the RA3000 for the Active Mode of Operation If you are upgrading from a single controller storage system, the installed controller will be in the active/passive mode of operation. To configure the storage system using a single serial connection, the dual controllers must be placed in Active/Active mode.

  • Page 109: Configuring The Dual Controllers

    Second Controller Option 5-13 Your storage system is now properly configured for dual controller operation from a single serial host port. Proceed to the next section to configure the controllers. Configuring the Dual Controllers In order to create a virtual disk, a serial connection must be made to the controller.

  • Page 110: Connecting To Your Dual Controller Storage System

    5-14 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide NOTE: If the storage window connection is lost when the cable is moved, reopen the HSZ22 StorageWindow). 16. Once the second Virtual Disk has been created, close the StorageWorks window. 17.

  • Page 111: Verifying The Controller Operating Parameters

    Second Controller Option 5-15 Verifying the Controller Operating Parameters For optimal dual-controller performance and load balancing, the host ports should be configured as listed below. Verify these parameters from the Controller Properties page: Host I/O channel 0 for Controller 1 (top) to Active Host I/O channel 1 for Controller 1 to Passive Channel 0 Target ID for Controller 1 to 0 Channel 1 Target ID for Controller 2 to 1...

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