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RAID Array 3000 StorageSubsystemHardware User’s GuideEK–SMCPO–UG. A01Digital Equipment CorporationMaynard, Massachusetts

EK–SMCPO–UG. A01xiAbout This GuideThis section identifies the audience of this guide and describes the contents (chapter-by-chapter) and structure. In

RAID Array 3000 Pedestal EnclosurexiiEK–SMCPO–UG. A01Chapter 4: Expansion Pedestal OptionExpansion Pedestal Option describes the major features and ch

About This GuideEK–SMCPO–UG. A01xiiiConventions (continued)Table 3 Nomenclature ConventionRAID Advisory Board Description RAID Array 3000 UsageRAID 0

RAID Array 3000 Pedestal EnclosurexivEK–SMCPO–UG. A01Who to contact in EuropeInformation and Product Questions: Contact the DIGITAL Distributor or res

EK–SMCPO–UG. A01 1–11Product OverviewThis chapter provides an overall description of the RAID Array 3000 storage subsystemand its components. A list o

RAID Array 3000 Storage Subsystem1–2 EK–SMCPO–UG. A01The RAID Array 3000 pedestal enclosure and its associated options are listedand described in Tabl

Chapter 1. Product OverviewEK–SMCPO–UG. A01 1–3Table 1–1 Pedestal RAID Array 3000 Part Numbers and Model DescriptionsDIGITAL Part No. Item Descriptio

RAID Array 3000 Storage Subsystem1–4 EK–SMCPO–UG. A011.2 Pedestal FeaturesThe major features of the pedestal are:• Two differential 16-bit UltraSCSI h

Chapter 1. Product OverviewEK–SMCPO–UG. A01 1–5 Figure 1–2 Pedestal Front Panel Major Components Figure 1–3 Pedestal Rear Panel Power Supplies

First Edition, January 1998The disclosure of this information does not grant to the user a license under any patents,pending patents, trademarks, or c

RAID Array 3000 Storage Subsystem1–6 EK–SMCPO–UG. A011.4 Pedestal Components The major components in the pedestal subsystem include:• Dual-channel RAI

Chapter 1. Product OverviewEK–SMCPO–UG. A01 1–7• Per LUN write cache/write back selection• Configuration/Maintenance via RS-232 or host SCSI channel u

RAID Array 3000 Storage Subsystem1–8 EK–SMCPO–UG. A01 1.4.5 Environmental Monitor Unit (EMU) The EMU is an internal circuit board that monitors the o

Chapter 1. Product OverviewEK–SMCPO–UG. A01 1–9Figure 1–5 Pedestal Rear Panel Components3000-23AController (Bottom)Controller (Top)Host #1ExternalFau

RAID Array 3000 Storage Subsystem1–10 EK–SMCPO–UG. A01Figure 1–6 UltraSCSI Bus Port and Default SCSI ID AssignmentsID9ID9ID 11ID8ID8ID10ID10Top Contr

Chapter 1. Product OverviewEK–SMCPO–UG. A01 1–11Figure 1–7 UltraSCSI Bus Configuration Switch3000-386Figure 1–8 Slot Locations and SCSI ID Addresses

RAID Array 3000 Storage Subsystem1–12 EK–SMCPO–UG. A011.5 SpecificationsTable 1–2 Pedestal Technical SpecificationsTechnical SpecificationsItem Desc

Chapter 1. Product OverviewEK–SMCPO–UG. A01 1–13Table 1–3 Pedestal Physical and Power SpecificationsPhysical SpecificationsItem DimensionHeight 564 m

EK–SMCPO–UG. A01 2–12RAID Array ControllerThis chapter describes the major features and characteristics of the RAID array control-ler in the RAID Arra

EK–SMCPO–UG. A01 iiiContentsRevision Record ...ixAbout This

RAID Array 3000 Pedestal Enclosure2–2 EK–SMCPO–UG. A01There are two configurations for redundant pairs of controllers: Active/ActiveFailover mode and

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–3From the pedestal’s perspective, the controller receives the I/O requests from thehost and directs

RAID Array 3000 Pedestal Enclosure2–4 EK–SMCPO–UG. A01• Stripesets (RAID 0) combine disk drives in serial to increase transfer or re-quests rates• Mir

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–5 Table 2–1 Controller Specifications (Continued) Item Specifications Disk Warm Spare (not spinn

RAID Array 3000 Pedestal Enclosure2–6 EK–SMCPO–UG. A01 2.3 Controller Reset and LED Indicators Figure 2–3 illustrates the front panel of the controll

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–7 Figure 2–3 Controller Front Panel 2.4 Flexible RAID Set Configuration In addition to its flexi

RAID Array 3000 Pedestal Enclosure2–8 EK–SMCPO–UG. A01• Each RAID set can be partitioned into smaller redundancy groups.• The controller’s host LUN Ma

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–9The controller uses several techniques to streamline write operations and signifi-cantly improve p

RAID Array 3000 Pedestal Enclosure2–10 EK–SMCPO–UG. A012.6 RAID Levels SupportedThe RAID Array 3000 controller supports the following RAID levels:Tabl

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–112.6.1 RAID 0RAID 0 breaks up data into smaller chunks and writes each chunk to a differentdrive

RAID Array 3000 Storage Subsystemiv EK–SMCPO–UG. A012 RAID Array Controller (continued)2.6.5 RAID 5...

RAID Array 3000 Pedestal Enclosure2–12 EK–SMCPO–UG. A01Figure 2–4 RAID 0 Write

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–132.6.2 RAID 1RAID 1 (also known as mirroring or shadowing) takes data sent by the host andduplica

RAID Array 3000 Pedestal Enclosure2–14 EK–SMCPO–UG. A01Figure 2–6 Diagram of RAID 0+1 WriteIn the event of a drive failure, a RAID 0+1 array will ent

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–152.6.4 RAID 4RAID 4 breaks up host data into chunks, calculates parity by performing an ex-clusiv

RAID Array 3000 Pedestal Enclosure2–16 EK–SMCPO–UG. A01In the event of a single drive failure, a RAID 4 array will continue to operate indegraded mode

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–17Figure 2–8 Diagram of a RAID 5 WriteRAID 5 handles drive failures in the same manner as RAID 4,

RAID Array 3000 Pedestal Enclosure2–18 EK–SMCPO–UG. A01CAUTIONRAID 5 can withstand a single failure and handleI/O activity without interruption in deg

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–19Table 2–6 System ParametersParameter DescriptionPassword Checking Enables or disables password c

RAID Array 3000 Pedestal Enclosure2–20 EK–SMCPO–UG. A012.8 Redundant OperationWhen operating in a redundant configuration, the two controllers are lin

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–21 While downloading the data, the controller responds to I/O by disconnecting (ifallowed) and wait

ContentsEK–SMCPO–UG. A01 v4 Expansion Pedestal Option4.1 Product Description...

RAID Array 3000 Pedestal Enclosure2–22 EK–SMCPO–UG. A01 WARNING• Slow Alarm• Normal I/O SEVERE• UltraSCSI Alarm• Flushes Cache• Enters Write-Through M

Chapter 2. RAID Array ControllerEK–SMCPO–UG. A01 2–232.9.2.2 Termination VoltageThe controller monitors the incoming termination voltage levels and e

RAID Array 3000 Pedestal Enclosure2–24 EK–SMCPO–UG. A012.9.3 Temperature Monitoring2.9.3.1 External TemperatureThe controller monitors the external

EK–SMCPO–UG. A01 3–13MaintenanceThis chapter describes how to interpret the status of the LEDs on the pedestal and usethem as a troubleshooting aid du

RAID Array 3000 Pedestal Enclosure3–2 EK–SMCPO–UG. A013.2 Pedestal Status and power LEDs The pedestal is equipped with two front panel LEDs (see Figur

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–3Table 3–1 Disk Drive SBB Status LEDsActivity LED Fault LED IndicationOn Off Drive is operating properly.Off

RAID Array 3000 Pedestal Enclosure3–4 EK–SMCPO–UG. A013.5 EMU Error ReportingThe primary function of the EMU is to detect and report conditions that c

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–53.6 Replacing Components (FRU's) This section describes how to replace an FRU in the RAID Array 3000 pe

RAID Array 3000 Pedestal Enclosure3–6 EK–SMCPO–UG. A01 3.6.2 Replacing an SBB There are two methods for replacing a disk drive SBB with an identical

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–7Figure 3–4 Replacing an SBB3.6.3 Replacing a Power SupplyYou can replace a power supply without affecting

RAID Array 3000 Storage Subsystemvi EK–SMCPO–UG. A01Figures (continued)3–8 Remove Screw and Panel...

RAID Array 3000 Pedestal Enclosure3–8 EK–SMCPO–UG. A01Figure 3–5 Replacing a Power Supply

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–93.6.4 Replacing the RAID Array ControllerPerform the following procedure to replace the RAID Array controll

RAID Array 3000 Pedestal Enclosure3–10 EK–SMCPO–UG. A013.6.5 Replacing the EMU BoardWARNINGOnly qualified service personnel should replacethe EMU. Da

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–11Figure 3–7 Remove Nuts from UPS and External Fault Connectors3000-4910. Align the connectors on the repla

RAID Array 3000 Pedestal Enclosure3–12 EK–SMCPO–UG. A013.6.14 Replacing the UPSProceed as follows to replace the UPS:1. Ensure the UPS power switch

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–13Table 3–2 SCSI Bus Length and External CablesBus Rate Bus Length Longest DIGITAL CableSpeed MT/s MB/s Mete

RAID Array 3000 Pedestal Enclosure3–14 EK–SMCPO–UG. A01The SCSI bus configuration switch selects the eight (0 – 7) SCSI bus configura-tions in the ped

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–15NOTETo decrease the configuration number: Pressthe upper switch to step the address down one ad-dress at a

RAID Array 3000 Pedestal Enclosure3–16 EK–SMCPO–UG. A01Figure 3–9 Location of SCSI Bus Configuration Switch3000-386Figure 3–10 Configuration Switch6

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–173.8 Replacing the Controller Memory Cache ModulesThe two memory cache modules in the RAID controller are re

ContentsEK–SMCPO–UG. A01 viiTables1–1 RAID Array 3000 Part Numbers and Model Descriptions...1–31–2 Pedestal Specifications...

RAID Array 3000 Pedestal Enclosure3–18 EK–SMCPO–UG. A01Figure 3–12 Release Locking ClipsFigure 3–13 Remove Installed SIMM ModulesCAUTIONEnsure the “

Chapter 3. MaintenanceEK–SMCPO–UG. A01 3–195. Installed the two replacement memory modules by aligning the module and con-nector pins (check alignmen

RAID Array 3000 Pedestal Enclosure3–20 EK–SMCPO–UG. A01Figure 3–15 Pivot Module Down to Secure

EK–SMCPO–UG. A01 4–14Expansion Pedestal OptionThis chapter describes the major features of the Expansion Pedestal Option and how toconnect the option

RAID Array 3000 Expansion Pedestal4–2 EK–SMCPO–UG. A014.2 Expansion Pedestal CabinetThe expansion pedestal cabinet is a modular free-standing storage

Chapter 4. Expansion Pedestal OptionEK–SMCPO–UG. A01 4–3 Figure 4–2 Expansion Pedestal Slot Locations and ID Addresses3000-19AEXPANSION PEDESTALSLOT

RAID Array 3000 Expansion Pedestal4–4 EK–SMCPO–UG. A01 Figure 4–3 Rear Panel Power Supplies 4.3 Expansion Pedestal Components The expansion pedestal

Chapter 4. Expansion Pedestal OptionEK–SMCPO–UG. A01 4–5 The EMU (Figure 4–4) is an internal circuit board, which monitors the operationof the pedesta

RAID Array 3000 Expansion Pedestal4–6 EK–SMCPO–UG. A01The RAID Array 3000 base pedestal is factory-configured for split-bus operation.You must reconfi

Chapter 4. Expansion Pedestal OptionEK–SMCPO–UG. A01 4–7Figure 4–5 Remove Side Cover from Base Pedestal8. Remove the bus terminator from backplane co

RAID Array 3000 Expansion Pedestal4–8 EK–SMCPO–UG. A01 Figure 4–7 Disconnect SCSI Cable 3000-41Remove SCSI Cable10. Connect jumper cable 17-04166-03

Chapter 4. Expansion Pedestal OptionEK–SMCPO–UG. A01 4–911. Remove the “knock-out” plate located above the D1 OUT label on the rearpanel of the base p

RAID Array 3000 Expansion Pedestal4–10 EK–SMCPO–UG. A01Figure 4–10 Connect SCSI Cable ? 3000-43Connect SCSI Cable13. Set the bus configuration switch

Chapter 4. Expansion Pedestal OptionEK–SMCPO–UG. A01 4–11Figure 4–12 Configuration SwitchFigure 4–13 Reconfigured SCSI Bus Addresses

RAID Array 3000 Expansion Pedestal4–12 EK–SMCPO–UG. A0114. Reinstall the side panel on the base pedestal.15. Connect the HD68-to-HD68 SCSI cable from

Chapter 4. Expansion Pedestal OptionEK–SMCPO–UG. A01 4–13Figure 4–15 Power Cable Connections3000-50BasePedestalExpansionPedestalUPSConnectorUPSACPowe

RAID Array 3000 Expansion Pedestal4–14 EK–SMCPO–UG. A01Figure 4–16 Transfer Drives from Base to Expansion PedestalID = 8ID = 9ID = 10ID = 11ID = 12ID

EK–SMCPO–UG. A01 5–15Second Controller OptionThis chapter describes how to install a second RAID controller in the pedestal. The sec-ond controller pr

RAID Array 3000 Pedestal Enclosure5–2 EK–SMCPO–UG. A01Figure 5–1 Second Controller Slot Location3000-48SecondControllerSlot5.2 Installation Procedu

Chapter 5. Second Controller OptionEK–SMCPO–UG. A01 5–35. Perform an inventory of the items in the second controller kit. The kit shouldcontain the fo

EK–SMCPO–UG. A01 ixRevision RecordThis Revision Record provides a concise publication history of this guide. It lists therevision levels, release date

RAID Array 3000 Pedestal Enclosure5–4 EK–SMCPO–UG. A01 Figure 5–3 Pivot Module Down to Seat 8. Remove the existing controller (see Figure 5–4) and i

Chapter 5. Second Controller OptionEK–SMCPO–UG. A01 5–59. Replace the existing controller into the top controller slot in the pedestal andseat it into

Reader’s CommentsManual Order Number:EK–SMCPO–UG. A01 RAID Array 3000 Storage Subsystem Hardware User's GuideDigital is committed to providi