RAID Array 3000 Storage Subsystem Hardware User’s Guide EK–SMCPO–UG.
First Edition, January 1998 The disclosure of this information does not grant to the user a license under any patents, pending patents, trademarks, or copyrights or other rights of Digital Equipment Corporation, or of any third party. This software is proprietary to and embodies the confidential technology of Digital Equipment Corporation.
Contents Revision Record ..............................................................................................ix About This Guide ...........................................................................................xi 1 Product Overview 1.1 1.2 1.3 1.4 1.4.1 1.4.2 1.4.3 1.4.4 1.4.5 1.4.6 1.5 2 Product Description...............................................................................1–1 Pedestal Features..............................................................................
RAID Array 3000 Storage Subsystem 2 RAID Array Controller (continued) 2.6.5 2.6.6 2.7 2.8 2.8.1 2.8.2 2.8.3 2.9 2.9.1 2.9.2 2.9.3 3 Maintenance 3.1 3.2 3.3 3.4 3.5 3.6 3.6.1 3.6.2 3.6.3 3.6.4 3.6.5 3.6.6 3.6.7 3.7 3.7.1 3.8 iv RAID 5............................................................................................ 2–16 JBOD .............................................................................................. 2–18 System Parameters....................................................
Contents 4 Expansion Pedestal Option 4.1 4.2 4.3 4.4 5 Product Description...............................................................................4–1 Expansion Pedestal Cabinet...................................................................4–2 Expansion Pedestal Components ...........................................................4–4 Reconfiguring Base Pedestal UltraSCSI Bus .........................................4–5 Second Controller Option 5.1 5.2 Introduction...........................
RAID Array 3000 Storage Subsystem Figures (continued) 3–8 3–9 3–10 3–11 3–12 3–13 3–14 3–15 4–1 4–2 4–3 4–4 4–5 4–6 4–7 4–8 4–9 4–10 4–11 4–12 4–13 4–14 4–15 4–16 5–1 5–2 5–3 5–4 vi Remove Screw and Panel.................................................................... 3–14 Location of SCSI Bus Configuration Switch ....................................... 3–15 Configuration Switch .......................................................................... 3–15 Remove Controller..........................
Contents Tables 1–1 1–2 1–3 2–1 2–2 2–3 2–4 2–5 2–6 2–7 2–8 2–9 2–10 2–11 2–12 3–1 3–2 3–3 RAID Array 3000 Part Numbers and Model Descriptions......................1–3 Pedestal Specifications........................................................................1–12 Pedestal Physical and Power Specifications......................................... 1–13 Controller Specifications.......................................................................2–4 LED/Reset Switch Interface ..........................
Revision Record This Revision Record provides a concise publication history of this guide. It lists the revision levels, release dates, and reasons for the revisions. The following revision history lists all revisions of this publication and their effective dates. The publication part number is included in the Revision Level column, with the last entry denoting the latest revision. This publication supports the StorageWorks RAID Array 3000 Storage Subsystem. Revision Level EK–SMCPO–UG. A01 EK–SMCPO–UG.
About This Guide This section identifies the audience of this guide and describes the contents (chapter-bychapter) and structure. In addition, this section includes a list of associated documents and the conventions used in this guide. Intended Audience This guide is intended for installers and operators of the RAID Array 3000 storage subsystem. Installing the subsystem requires a general understanding of basic SCSI terminology and SBus product installation procedures.
RAID Array 3000 Pedestal Enclosure Chapter 4: Expansion Pedestal Option Expansion Pedestal Option describes the major features and characteristics of the pedestal expansion kit option. It also explains how to reconfigure the SCSI bus in the base pedestal to accommodate the added storage capability of the expansion pedestal. Chapter 5: Second Controller Option Second Controller Option describes how to install a second controller in the pedestal for redundancy.
About This Guide Conventions (continued) Table 3 Nomenclature Convention RAID Advisory Board Description RAID Array 3000 Usage RAID 0 STRIPset RAID 1 MIRRORset RAID 0+1 STRIPED MIRRORset RAID 4 STRIPED with a Fixed parity drive RAID 5 STRIPED with a Floating parity drive Support and Services Who to contact in the Americas Local Sales Office / StorageWorks Hotline 1-800-786-7967 Contact the DIGITAL Distributor where the Installation Support: Storage Solution was Purchased / Local Digital Sales O
RAID Array 3000 Pedestal Enclosure Who to contact in Europe Information and Product Questions: Contact the DIGITAL Distributor or reseller Installation Support and Installation: Contact the DIGITAL Distributor or reseller from whom the Storage Solution was purchased. For Warranty Service See the Warranty Card packaged with the product. For Remedial Service Contact the DIGITAL Distributor or reseller from whom the Storage Solution was purchased.
1 Product Overview This chapter provides an overall description of the RAID Array 3000 storage subsystem and its components. A list of technical and environmental specifications is located at the end of the chapter. NOTE This guide is the Hardware User’s Guide. For configuration information, refer to the Getting Started RAID Array 3000 for Windows NT – Intel Installation Guide and the StorageWorks Command Console (SWCC) 2.0 User’s Guide. 1.
RAID Array 3000 Storage Subsystem The RAID Array 3000 pedestal enclosure and its associated options are listed and described in Table 1–1. Figure 1–1 shows the pedestal with a full complement of drives (optional) for completeness. Figure 1–1 RAID Array 3000 Pedestal Enclosure (Drives Optional) PE DE STAL U PS 3 00 0 -01 A The RAID 3000 pedestal is equipped with a dual-channel RAID controller which supports all of the UltraSCSI bus features.
Chapter 1. Product Overview Table 1–1 Pedestal RAID Array 3000 Part Numbers and Model Descriptions DIGITAL Part No. DS-SWXRA-GA Item Description RA3000 pedestal subsystem with one controller, 120 V.
RAID Array 3000 Storage Subsystem 1.
Chapter 1. Product Overview Figure 1–2 Pedestal Front Panel Major Components Figure 1–3 Pedestal Rear Panel Power Supplies EK–SMCPO–UG.
RAID Array 3000 Storage Subsystem 1.4 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) 1.4.1 StorageWorks Building Blocks (SBBs) The pedestal has seven 3½-inch disk drive SBB slots.
Chapter 1. Product Overview • Per LUN write cache/write back selection • Configuration/Maintenance via RS-232 or host SCSI channel using SWCC (StorageWorks Command Console) • Update of firmware via host channel 1.4.3 Pedestal Power Supplies The pedestal has two interchangeable, air-cooled, AC power supply modules located at the rear of the unit. The power supplies provide redundant power if one of the units should malfunction.
RAID Array 3000 Storage Subsystem 1.4.5 Environmental Monitor Unit (EMU) The EMU is an internal circuit board that monitors the operation of the pedestal. The EMU monitors power supply voltages, fans, temperatures which are reported to the user, and controls (turns on and off) the audible alarm and status LED on the front panel. The EMU also reports the subsystem status to the controller that reports to the host, and has the capability of exchanging signals with auxiliary devices and controllers.
Chapter 1. Product Overview Figure 1–5 Pedestal Rear Panel Components H ost #0 Exte rna l Fa ult H o st #1 U PS C on tro lle r (Top) C on tro ller (B ottom ) 3 0 00 -2 3A 1.4.6 UltraSCSI Buses The pedestal contains two, 16-bit, single-ended, wide UltraSCSI buses (factoryconfigured as a split bus) that connects the controller(s) 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.
RAID Array 3000 Storage Subsystem Figure 1–6 UltraSCSI Bus Port and Default SCSI ID Assignments ID 8 ID 9 ID 10 ID 11 ID 8 D evice P ort 0 ID 9 D evice P ort 1 ID 10 Top C o ntroller ID =7 ID = 7 B otto m C ontro ller (O ption al) ID =6 ID = 6 30 0 0 -51 When set to a specific position, the switch controls the addresses of each SBB slot. Figure 1–8 identifies the pedestal slot locations and their corresponding SCSI ID addresses for each device port.
Chapter 1. Product Overview Figure 1–7 UltraSCSI Bus Configuration Switch 6 3000 -3 8 Figure 1–8 Slot Locations and SCSI ID Addresses C ontroller S LO T 0 ID = 8 S LO T 1 D evic e P ort 0 S LO T 2 S LO T 3 11 S LO T 4 8 D evic e P ort 1 S LO T 5 S LO T 6 ID = 10 300 0 - 52 EK–SMCPO–UG.
RAID Array 3000 Storage Subsystem 1.
Chapter 1. Product Overview Table 1–3 Pedestal Physical and Power Specifications 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 Power Specifications Item Rating Input power 110-240 Vac, 50/60 Hz, single phase, 12A/6A Heat dissipation 3070 BTUs/hr.
2 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. 2.1 Controller Overview The RAID Array controller provides high performance, high-availability access to SCSI disk array subsystems along a UltraSCSI/Wide SCSI bus.
RAID Array 3000 Pedestal Enclosure There are two configurations for redundant pairs of controllers: Active/Active Failover mode and Active/Passive Failover mode. In Active/Active Failover, each controller in the redundant pair has one active SCSI host port and one passive SCSI host port. Redundancy Groups (Virtual LUNS) can be mapped only to one active host port and are not accessible from the passive port or the other controller (i.e. partitioned model).
Chapter 2. RAID Array Controller 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.
RAID Array 3000 Pedestal Enclosure • 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 - just like stripesets - but also store parity data to ensure high reliability • Stripe mirrorsets (RAID 0 + 1) combine mirrorsets in serial to provide the highest throughput an
Chapter 2.
RAID Array 3000 Pedestal Enclosure 2.3 Controller Reset and LED Indicators Figure 2–3 illustrates the front panel of the controller. All LEDs are numbered from left to right. The reset button (LED 0) flashes green about once every second (heartbeat) to indicate that the controller is operating normally. LEDs 1 through 4-display host and disk channel activity (amber). LED 5 (normally off) comes on red during a controller failure. The LED/Reset switch interface is defined in Table 2–2.
Chapter 2. RAID Array Controller Figure 2–3 Controller Front Panel 2.4 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. • A RAID set can contain all the drives connected to the controller, a single drive, or any number of drives in between. • The controller supports RAID Levels 0, 1, 0+1, 4, and 5.
RAID Array 3000 Pedestal Enclosure 2.5 • 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. • Any drive may be designated as a hot or warm spare.
Chapter 2. RAID Array Controller The controller uses several techniques to streamline write operations and significantly improve performance. All the techniques use the controller’s on-board cache, which can contain up to 64 MB of memory in the form of standard 72-pin, 60-nanosecond SIMMs. NOTE The controller will not operate without at least one 4 MB SIMM installed in its cache. Nor will it operate without either a backup or an un-interruptable power supply connected to the controller.
RAID Array 3000 Pedestal Enclosure 2.6 RAID Levels Supported The RAID Array 3000 controller supports the following RAID levels: Table 2–3 RAID Levels Supported RAID Level 0 1 0+1 Description Striping without parity Mirroring Striping and mirroring 4 Striping with fixed parity drive 5 Striping with floating parity drive JBOD “Just a Bunch of Drives” NOTE The controller stripes data in multi-block chunk sizes. Also, the controller does not support RAID level 3 or 0 with a one-block chunk size.
Chapter 2. RAID Array Controller 2.6.1 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. The advantage of RAID 0 is its high bandwidth. By breaking up a large block of data into smaller chunks, the controller can use multiple drive channels to write the chunks to the disk drives.
RAID Array 3000 Pedestal Enclosure Figure 2–4 RAID 0 Write 2–12 EK–SMCPO–UG.
Chapter 2. RAID Array Controller 2.6.2 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. This comes at a price: a RAID 1 array requires multiple drives to achieve the storage capacity of a single drive. Figure 2–5 illustrates a RAID 1 write.
RAID Array 3000 Pedestal Enclosure 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. When the controller creates a RAID 0+1 set, it first sorts the drives by channel number and SCSI ID. Then it stripes the data across every other drive and forms a mirrored pair with the first two drives, another mirrored pair with the second two drives, and so on.
Chapter 2. RAID Array Controller 2.6.4 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. Figure 2–7 Diagram of a RAID 4 Write EK–SMCPO–UG.
RAID Array 3000 Pedestal Enclosure In the event of a single drive failure, a RAID 4 array will continue to operate in degraded mode. If the failed drive is a data drive, writes will continue as normal, except no data will be written to the failed drive. Reads will reconstruct the data on the failed drive by performing an exclusive-or operation on the remaining data in the stripe and the parity for that stripe.
Chapter 2. RAID Array Controller Figure 2–8 Diagram of a RAID 5 Write RAID 5 handles drive failures in the same manner as RAID 4, except the parity is different for each stripe. The controller either uses the parity information on a stripe to reconstruct its data or simply reads the data as normal, depending on the location of the stripe’s parity drive.
RAID Array 3000 Pedestal Enclosure CAUTION RAID 5 can withstand a single failure and handle I/O activity without interruption in degraded mode until the failed drive is rebuilt. If a second drive fails while the RAID set is in degraded mode, the entire RAID set will fail. 2.6.6 JBOD JBOD, which stands for “Just a Bunch of Disks”, makes it possible to connect one or standalone disk drives to the controller.
Chapter 2. RAID Array Controller Table 2–6 System Parameters Parameter Description Password Checking Enables or disables password checking. When password checking is enabled, the controller will limit access to certain options unless the correct password is supplied. Rebuild Rate Determines how much of the controller’s processing power is to be used during rebuild operations. A higher number speeds up the rebuild operation, but may impact I/O performance.
RAID Array 3000 Pedestal Enclosure 2.8 Redundant Operation When operating in a redundant configuration, the two controllers are linked such that, in case of a failure, the surviving controller can access the other controller’s cache memory and complete all operations that were in progress when the failure occurred. The controllers support two different configurations: • ACTIVE / ACTIVE: One host port is active on each controller.
Chapter 2. RAID Array Controller While downloading the data, the controller responds to I/O by disconnecting (if allowed) and waiting approximately three seconds before reconnecting and presenting a BUSY status. The delay is to prevent host operating systems from seeing too many errors and fencing off the controller. 2.9 Environmental The controller incorporates a set of on board sensors to detect abnormal operating conditions that may affect data safety. 2.9.
RAID Array 3000 Pedestal Enclosure WARNING • Slow Alarm • Normal I/O SEVERE • UltraSCSI Alarm • Flushes Cache • Enters Write-Through Mode OFFLINE • UltraSCSI Alarm • Flushes Cache • No New I/O Allowed 2.9.2 Voltage Monitoring 2.9.2.1 System Voltage The controller monitors the incoming system voltage levels and ensures they are satisfactory for controller operation. The acceptable voltage levels are listed in Table 2–8.
Chapter 2. RAID Array Controller 2.9.2.2 Termination Voltage The controller monitors the incoming termination voltage levels and ensures they are satisfactory for controller operation. The acceptable voltage levels are shown in Table 2–9. Table 2–9 Acceptable Termination Voltage Levels State Range Action Normal 4.20 - 5.40 V Normal Operation Low Warning 4.00 - 4.20 V Alarm High Warning 5.40 - 5.55 V Alarm Low Severe Less than 4.00 V Off-line High Severe Greater than 5.55 V Off-line 2.9.2.
RAID Array 3000 Pedestal Enclosure 2.9.3 Temperature Monitoring 2.9.3.1 External Temperature The controller monitors the external operating temperature and ensures they are satisfactory for controller operation. The acceptable temperature levels are shown in the following table. Table 2–11 Acceptable External Temperature Voltage Levels State Temperature Action Normal < 41º C Normal Operation High Warning < 41º C - 52º C Alarm High Severe > 52º C Off-line 2.9.3.
3 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. 3.1 Introduction Troubleshooting the pedestal consists of monitoring the status of the external LEDs to determine if a major component is malfunctioning.
RAID Array 3000 Pedestal Enclosure 3.2 Pedestal Status and power LEDs The pedestal is equipped with two front panel LEDs (see Figure 3–1) that monitor the following error conditions: • A power supply fan that is not operating • An over-temperature condition • A dc power problem • External fault conditions • Controller faults When the pedestal is operating properly, the green power LED is on and the amber pedestal fault LED is off. Also, the green power supply LED on the rear of each power supply is on.
Chapter 3. Maintenance Table 3–1 Disk Drive SBB Status LEDs Activity LED Fault LED Indication On Off Drive is operating properly. Off Off Drive is inactive and operating normally. There is no fault. On On Fault status: drive is defective. Recommend that you replace the device. Off On Fault status: drive is inactive and not spinning. Recommend that you replace the device. On Flashing Fault status: drive is active and slowing down due to the fault. Figure 3–2 Disk Drive Status LEDs 3.
RAID Array 3000 Pedestal Enclosure 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.
Chapter 3. Maintenance 3.6 Replacing Components (FRU's) This section describes how to replace an FRU in the RAID Array 3000 pedestal. The information is divided into the following subsections: • Removing the pedestal door • Replacing an SBB • Replacing a power supply • Replacing the controller • Replacing the EMU board • Replacing the UPS • Replacing a controller memory cache module 3.6.1 Removing the Pedestal Door Proceed as follows to remove the pedestal door (Figure 3–3): 1.
RAID Array 3000 Pedestal Enclosure 3.6.2 Replacing an SBB There are two methods for replacing a disk drive SBB with an identical SBB: • Hot swap – This method requires that the SCSI controller support removing and installing SBBs while the bus is active.
Chapter 3. Maintenance Figure 3–4 Replacing an SBB 3.6.3 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. 1. Grasp the power supply handle shown in Figure 3–5. 2.
RAID Array 3000 Pedestal Enclosure Figure 3–5 Replacing a Power Supply 3–8 EK–SMCPO–UG.
Chapter 3. Maintenance 3.6.4 Replacing the RAID Array Controller Perform the following procedure to replace the RAID Array controller (see 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. 2. Remove the controller by sliding it forward and free of the pedestal. 3.
RAID Array 3000 Pedestal Enclosure 3.6.5 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. Perform the following procedure to replace the EMU Board: Tools required: • Flat-blade or 3/16 (5 mm) hex-head screwdriver • # 10 TORX-head screwdriver 1. Quiesce the host bus by shutting down the host system.
Chapter 3. Maintenance Figure 3–7 Remove Nuts from UPS and External Fault Connectors 3 0 00 -4 9 10. 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). 11. Reconnect the two ribbon cables to the rear connectors on the EMU board. 12. Replace the side cover on the pedestal and secure it with the TORX-head screw on the front bezel of the pedestal. 13. Replace the door on the pedestal. EK–SMCPO–UG.
RAID Array 3000 Pedestal Enclosure 3.6.14 Replacing the UPS Proceed as follows to replace the UPS: 3.7 1. Ensure the UPS power switch is set to off. 2. Disconnect the pedestal power cord from the UPS. 3. Disconnect the UPS power cord from the wall outlet. 4. Disconnect the signal control cable from the UPS 5. Install the replacement UPS and reconnect the power cords and the signal control cable. 6. Set the UPS power switch to on and then power up the pedestal.
Chapter 3. Maintenance Table 3–2 SCSI Bus Length and External Cables Bus Speed Fast Rate Bus Length MT/s MB/s Meters 20 40 25 Longest DIGITAL Cable Feet Number 82 Meters BN21K-23 BN21L-23 23 Feet 82 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. An internal eight-position step switch in the cabinet controls the SCSI bus device address configuration of the SBB slots in the pedestal.
RAID Array 3000 Pedestal Enclosure 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.
Chapter 3. Maintenance 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. 9. Figure 3–9 shows the location of the switch.
RAID Array 3000 Pedestal Enclosure Figure 3–9 Location of SCSI Bus Configuration Switch 6 3 00 0 -3 8 Figure 3–10 Configuration Switch 6 NOTE Reconfiguring the bus also involves cable and bus terminator changes. Chapter 4 of this guide describes in detail how to reconfigure the bus. 3–16 EK–SMCPO–UG.
Chapter 3. Maintenance 3.8 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: CAUTION To prevent an electrical discharge from damaging the SIMMs, always wear an ESD wrist strap connected to a suitable ground when handling the memory chips. 1. Power down the pedestal first and then the UPS. 2.
RAID Array 3000 Pedestal Enclosure Figure 3–12 Release Locking Clips Figure 3–13 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. 3–18 EK–SMCPO–UG.
Chapter 3. Maintenance 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 (see Figures 3–14 and 3–15). 6. Replace the controller into the pedestal. 7. Power on the UPS and pedestal and check the activity LEDs on the front panel of the controller.
RAID Array 3000 Pedestal Enclosure Figure 3–15 Pivot Module Down to Secure 3–20 EK–SMCPO–UG.
4 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. 4.1 Product Description The StorageWorks pedestal expansion option (Figure 4–1) is designed to expand the storage capacity of the RAID Array 3000 subsystem.
RAID Array 3000 Expansion Pedestal 4.2 Expansion Pedestal Cabinet The expansion pedestal cabinet is a modular free-standing 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.
Chapter 4. Expansion Pedestal Option Figure 4–2 Expansion Pedestal Slot Locations and ID Addresses SLOT 0 ID = 8 SLOT 1 SLOT 2 SLOT 3 SLOT 4 SLOT 5 SLOT 6 ID = 1 4 E XPAN S ION P ED ES TAL 300 0-19 A EK–SMCPO–UG.
RAID Array 3000 Expansion Pedestal Figure 4–3 Rear Panel Power Supplies 4.3 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. The single-ended UltraSCSI bus is factory-configured as one continuous bus that runs along the backplane between the disk drive connectors and the internal cables.
Chapter 4. Expansion Pedestal Option The EMU (Figure 4–4) is an internal circuit board, which monitors the operation of the pedestal. The EMU monitors power supply voltages, fans, temperatures that are reported to the user, and controls (turns on and off) the audible alarm and status LED on the front panel of the pedestal. It is connected to the SCSI bus and powered by internal cabling.
RAID Array 3000 Expansion Pedestal The RAID Array 3000 base pedestal is factory-configured for split-bus operation. You must reconfigure the bus in the base subsystem from split-bus to a “throughbus” configuration prior to connecting the expansion cabinet to the base subsystem. The components needed to reconfigure the split-bus in the base subsystem are included with your pedestal expansion kit option.
Chapter 4. Expansion Pedestal Option Figure 4–5 Remove Side Cover from Base Pedestal 8. Remove the bus terminator from backplane connector J11 (Figure 4–6). Figure 4–6 Remove SCSI Bus Terminator R e m o v e Te rm in ato r 9. 3000-40 Remove the SCSI cable from device # 1 connector and backplane connector J16 (see Figure 4–7). EK–SMCPO–UG.
RAID Array 3000 Expansion Pedestal Figure 4–7 Disconnect SCSI Cable R em ove SC S I C a ble 3000- 41 10. Connect jumper cable 17-04166-03 between the backplane connector J11 and the backplane connector J16 (see Figure 4–8). Figure 4–8 Connect SCSI Jumper J11 J16 C onnect Jum pe r C able 4–8 3000- 42 EK–SMCPO–UG.
Chapter 4. Expansion Pedestal Option 11. Remove the “knock-out” plate located above the D1 OUT label on the rear panel of the base pedestal (see Figure 4–9). Figure 4–9 Remove Connector Knockout Plate R em ove Kn ockou t from D 1 O ut 3 0 0 0 -4 5 12. Connect cable assembly 17-04454-01 between the D1 OUT bulkhead opening and the device # 1 backplane connector (see Figure 4–10). Secure the bulkhead connector by tightening the two 6-32 SEM screws. EK–SMCPO–UG.
RAID Array 3000 Expansion Pedestal Figure 4–10 Connect SCSI Cable C o n n e c t S C S I C a b le ? 30 00 -43 13. Set the bus configuration switch to “7” (see Figures 4–11 and 4–12). Figure 4–13 shows the reconfigured SCSI bus addresses of the expanded subsystem. Figure 4–11 Set Configuration Switch to 7 7 3 00 0- 44 4–10 EK–SMCPO–UG.
Chapter 4. Expansion Pedestal Option Figure 4–12 Configuration Switch Figure 4–13 Reconfigured SCSI Bus Addresses EK–SMCPO–UG.
RAID Array 3000 Expansion Pedestal 14. Reinstall the side panel on the base pedestal. 15. 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. Figure 4–14 Connect SCSI Cable Between Pedestals Base P e d es ta l E xpa ns io n P e de stal 3000-4 7 16. Make the power cable connections between the expansion pedestal, the UPS, and the ac power source (see Figure 4–15). 4–12 EK–SMCPO–UG.
Chapter 4. Expansion Pedestal Option Figure 4–15 Power Cable Connections UPS C on n ec to r B as e P e d e stal AC P o w er Ex pa nsio n P e de sta l AC Power AC Power U PS 30 00-5 0 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. 17.
RAID Array 3000 Expansion Pedestal Figure 4–16 Transfer Drives from Base to Expansion Pedestal ID = 8 ID = 8 ID = 9 ID = 9 ID = 10 ID = 10 ID = 11 ID = 11 ID = 8 ID = 12 ID = 9 ID = 13 ID = 10 ID = 14 B ase Pedestal E xpansion P edes ta l 3 0 00 -4 6 18. Install the new drives in the remaining slots each pedestal to complete the installation. 19.
5 Second Controller Option This chapter describes how to install a second RAID controller in the pedestal. The second controller provides a fail/safe feature to protect your data in case of a primary controller malfunction. The redundant controller is installed directly below the primary (top) controller. 5.1 Introduction The controller option provides a second (redundant) controller unit in your subsystem installation to preserve the integrity of data should the first controller sustain a malfunction.
RAID Array 3000 Pedestal Enclosure Figure 5–1 Second Controller Slot Location S econ d C ontrolle r S lot 3000-48 5.2 Installation Procedure CAUTION To prevent an electrical discharge from damaging the SIMMs, always wear an ESD wrist strap connected to a suitable ground when handling the memory modules. 5–2 1. Ensure that the UltraSCSI bus is in a quiescent state (no I/O activity). 2. Shut down the host system. 3. Issue a “shutdown” command from the SWCC console to the pedestal controller. 4.
Chapter 5. Second Controller Option 5. 6. Perform an inventory of the items in the second controller kit. The kit should contain the following: • RAID Array 3000 controller • memory SIMMs • Model label • Warranty Card Install two of the SIMM modules into the second controller (make sure all modules are of the same type) by aligning the connector pins and inserting the modules into the SIMM module connectors as shown in Figure 5–2. Figure 5–2 Insert Module into SIMM Connector 7.
RAID Array 3000 Pedestal Enclosure Figure 5–3 Pivot Module Down to Seat 8. Remove the existing controller (see Figure 5–4) and install the third module into the empty SIMM connector using the same procedure described in step 6. Figure 5–4 Remove Controller from Top Slot 5–4 EK–SMCPO–UG.
Chapter 5. Second Controller Option 9. Replace the existing controller into the top controller slot in the pedestal and seat it into place by pushing forward on the side quick-disconnect handles. Make sure the guides on each side of the controller align with the guides in the slot. 10. Remove the dummy filler panel from the bottom controller slot by pulling the handle straight out. 11.
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