Compaq HSZ80 Manual de servicio

HSZ80 Array Controller ACS Version 8.3Configuration and CLI Reference GuideFirst Edition (December 1998)Part Number EK-HSZ80-RG. A01/388222-001Compaq

3–10 Creating Storagesets A major benefit of striping is that it balances the I/O load across all of the disk drives in the storageset. This can incre

3–11Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFor this reason, you should avoid using a stripeset to store cr

3–12 Creating Storagesets ❏ Storing program image libraries or run-time libraries for rapid loading❏ Storing large tables or other structures of read-

3–13Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 3–5. Mirrorsets Maintain Two Copies of the Same DataCon

3–14 Creating Storagesets If you are using more than one mirrorset in your subsystem, you should put the first member of each mirrorset on different

3–15Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide A storageset should only contain disk drives of the same capa

3–16 Creating Storagesets For example, in a three-member RAIDset that contains disk drives 10000, 20000, and 30000, the first chunk of an I/O request

3–17Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide Reporting methods and size limitations prevent certain operat

3–18 Creating Storagesets Using Striped Mirrorsets for Highest Performance and AvailabilityStriped mirrorsets are simply stripesets whose members are

3–19Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConsiderations for Planning a Striped MirrorsetPlan the mirrors

xiCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFiguresBasic Building Block . . . . . . . . . . . . . . . . . .

3–20 Creating Storagesets Cloning Data for BackupUse the CLONE utility to duplicate the data on any unpartitioned single-disk unit, stripeset, mirrors

3–21Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 3–9. CLONE Steps for Duplicating Unit MembersUse the fo

3–22 Creating Storagesets 2. Start CLONE using the following syntax:RUN CLONE3. When prompted, enter the unit number of the unit you want to clone.4.

3–23Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCLONE WILL CREATE A NEW UNIT WHICH IS A COPY OF UNIT 204. Enter

3–24 Creating Storagesets DISK20000(size=832317) (y,n) [y] ? y MIRROR DISK20000 C_MB SET C_MB NOPOLICY SET C_MB MEMBERS=2 SET C_MB REPLACE=DISK20400 C

3–25Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideBacking Up Your Subsystem ConfigurationYour controller stores i

3–26 Creating Storagesets Saving Subsystem Configuration Information to Multiple DisksYou can save your subsystem configuration information to as many

3–27Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDisplaying the Status of the Save Configuration FeatureYou can

3–28 Creating Storagesets Cache:128 MEGABYTE WRITE CACHE, VERSION UNKNOWNCACHE IS GOODUNFLUSHED DATA IN CACHECACHE_FLUSH_TIMER = DEFAULT (10 SECONDS)M

3–29Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide NOTRANSPORTABLE TRANSFER_RATE_REQUESTED = 20

xii Storageset Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–35PTL Naming Convention

3–30 Creating Storagesets Node IDsA node ID is a unique 64-bit number assigned to a subsystem by the Institute of Electrical and Electronics Engineers

3–31Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCAUTION: Never set two subsystems to the same node ID, or data

3–32 Creating Storagesets Assigning Unit Numbers for Host Access to StoragesetsThe HSZ80 controller supports up to 15 SCSI target IDs, each of which c

3–33Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideOmit the leading zeroes for storage units associated with the c

3–34 Creating Storagesets Creating a Storageset MapConfiguring your subsystem will be easier if you know how the storagesets correspond to the disk dr

3–35Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 3–10. Storageset MapTo create a storageset map:1. Copy

3–36 Creating Storagesets 3. Show the devices that are assigned to the controller. Use the following syntax:SHOW DEVICES4. Locate each device assigned

3–37Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideNOTE: The controller operates with BA370 rack-mountable enclos

3–38 Creating Storagesets Figure 3–12. PTL Addressing in an Extended ConfigurationIn Figure 3–12, the controller addresses DISK30800 through device p

3–39Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideWhen your controller receives an I/O request, it identifies the

xiiiCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideTablesBasic Building Blocks List . . . . . . . . . . . . . .

3–40 Creating Storagesets Planning PartitionsUse partitions to divide a storageset or disk drive into smaller pieces, which can be presented to the ho

3–41Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideAn unpartitioned storage unit has more capacity than a partitio

3–42 Creating Storagesets Choosing Switches for Storagesets and DevicesDepending upon the kind of storageset or device you are configuring, you can en

3–43Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideRAIDset SwitchesYou can enable the following switches to contro

3–44 Creating Storagesets RECONSTRUCT=FAST gives more resources to reconstructing the replacement disk drive, which may reduce the subsystem’s overa

3–45Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideMirrorset SwitchesYou can enable the following switches to cont

3–46 Creating Storagesets Copy SpeedSpecify a copy speed to determine the speed with which the controller copies the data from an operational disk dri

3–47Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDisaster Tolerance SupportSpecify if disaster tolerant function

3–48 Creating Storagesets Device SwitchesWhen you add a disk drive or other storage device to your subsystem, you can enable the following switches:

3–49Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideTransportable devices have these characteristics:❏ Can be inter

xiv Optimum Operating Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . .B–3Maximum Operating Environmental Specification

3–50 Creating Storagesets Local/RemoteSpecify the disk characteristics in a mirrorset, either local (default) or remote. Disks set to REMOTE can only

3–51Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideInitialize SwitchesYou can enable the following kinds of switch

3–52 Creating Storagesets Increasing the Request RateA large chunk size (relative to the average request size) increases the request rate by allowing

3–53Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideLarge chunk sizes also tend to increase the performance of rand

3–54 Creating Storagesets Increasing Sequential Write PerformanceFor stripesets (or striped mirrorsets), use a large chunk size relative to the I/O si

3–55Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSave ConfigurationIndicate whether to save the subsystem’s conf

3–56 Creating Storagesets When you incorporate a spare into a storageset that you initialized with the INITIALIZE SAVE_CONFIGURATION command, the co

3–57Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide When replacing both controllers, you can replace the first an

3–58 Creating Storagesets Unit SwitchesYou can enable (either add or set) the Unit switches listed in Table 3–5 for the listed storagesets and devices

4–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideChapter 4Configuring StoragesetsThis chapter provides informatio

xvCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideAbout This GuideThis book describes the features of the HSZ80 Arr

4–2 Configuring Storagesets IntroductionOne method of configuring storagesets is manual configuration. This method allows you the most flexibility in

4–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConfiguring a StripesetSee “Using Striped Mirrorsets for Highest

4–4 Configuring Storagesets ExampleThe following example shows the commands you would use to create Stripe1, a three-member stripeset:ADD STRIPESET ST

4–5Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide3. Present the mirrorset to the host by giving it a unit number

4–6 Configuring Storagesets Configuring a RAIDsetSee “Creating a Storageset and Device Profile,” page 3–5 for information about creating a profile and

4–7Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide4. Verify the RAIDset configuration and switches. Use the follow

4–8 Configuring Storagesets 3. Initialize the stripeset. If you want to set any Initialize switches, you must do so in this step. Use the following sy

4–9Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExampleThe following example shows the commands you would use to

4–10 Configuring Storagesets See “ADD UNIT,” page 5–27, for valid switches and values.NOTE: If you make a disk transportable, you cannot specify WRIT

4–11Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide2. Initialize the storageset or disk drive. If you want to set

xvi About This Guide PrecautionsFollow these precautions when you’re carrying out the procedures in this book.Electrostatic Discharge PrecautionsStati

4–12 Configuring Storagesets ExampleThe following example shows the commands you would use to create RAID1, a three-member RAIDset partitioned into fo

4–13Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideADD UNIT D1 RAID1 PARTITION=1ADD UNIT D2 RAID1 PARTITION=2ADD U

4–14 Configuring Storagesets 2. Verify the contents of the spareset using the following syntax:SHOW SPARESETExampleThe following example shows the com

4–15Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExampleThe following example shows the commands you would use t

4–16 Configuring Storagesets Deleting a StoragesetIf the storageset you are deleting is partitioned, you must delete each partitioned unit before you

4–17Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideChanging Switches for a Storageset or DeviceYou can optimize a

4–18 Configuring Storagesets Changing Initialize SwitchesThe Initialize switches cannot be changed without destroying the data on the storageset or de

4–19Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConfiguring with the Command Console LUNThe Command Console LUN

4–20 Configuring Storagesets Finding the CCL LocationTo see where each CCL is located, use the following commands:SHOW THIS_CONTROLLERorSHOW OTHER_CON

4–21Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCAUTION: Selecting SCSI-3 mode enables multiple CCLs—one for e

xviiCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideVHDCI Cable PrecautionsAll of the cables to the controller, cac

4–22 Configuring Storagesets SCSI-2 ModeAs you add storage units and set SCSI IDs over the CCL or above its location, the CCL immediately and automati

4–23Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConfiguring Units with Multiple HostsThe HSZ80 Array Controller

4–24 Configuring Storagesets The following modes can be assigned: A—DIGITAL UNIX®, OpenVMS, and Hewlett-Packard® HP–UX (Default) B—IBM AIX® C—HSZ15

4–25Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideNOTE: Figure 4–1 shows an example of a heterogeneous host conf

4–26 Configuring Storagesets Transparent Failover ModeIn transparent failover mode, units can be assigned to a host in a variety of setups, including

4–27Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 4–2. Accessing Units on a Given PortTo assign the units

4–28 Configuring Storagesets Designating the Host SCSI ID NumberThe HSZ80 Array Controller allows multiple hosts on the same SCSI host bus to access u

4–29Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 4–3. Accessing Units with the Host Port’s SCSI ID Numbe

4–30 Configuring Storagesets Designating the Port and Designating the Host SCSI ID NumberUsing a two-step process, port access can be combined with sh

4–31Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuiderFigure 4–4. Accessing Units through Port Access and the Host

xviii About This Guide ConventionsThis book uses the following typographical conventions and special notices to help you find what you’re looking for.

4–32 Configuring Storagesets To assign the units to one of the Windows NT hosts using SCSI ID numbers, yet restrict the other Window NT host’s access,

4–33Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideNOTE: Figure 4–5 shows an example of a heterogeneous host conf

4–34 Configuring Storagesets SET D101 THIS_PORT_1_DISABLE_ACCESS_PATH = ALLSET D101 OTHER_PORT_1_DISABLE_ACCESS_PATH = ALLSET D101 THIS_PORT_1_ENABLE_

4–35Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideMoving StoragesetsYou can move a storageset from one subsystem

4–36 Configuring Storagesets Use the following procedure to move a storageset while maintaining the data it contains:1. Show the details for the stora

4–37Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide8. Recreate the storageset by adding its name to the controller

4–38 Configuring Storagesets (...move disk drives to their new location...)ADD DISK DISK20000 2 0 0ADD DISK DISK30000 3 0 0ADD DISK DISK40000 4 0 0ADD

5–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideChapter 5CLI CommandsThis appendix contains the Command Line Int

5–2 CLI Commands CLI OverviewThe Command Line Interpreter (CLI) is one of the user interfaces through which you control your StorageWorks array contro

5–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide Device Commands—Create and configure containers made from phys

xixCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSpecial NoticesThis book doesn’t contain detailed descriptions o

5–4 CLI Commands The controller processes each command in sequence. You can continue entering subsequent commands while the controller is processing

5–5Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide The first character is a letter indicating the kind of device

5–6 CLI Commands Changing the CLI PromptYou can change the CLI prompt that displays. Use the SET THIS_CONTROLLER PROMPT command. Enter a 1- to 16- cha

5–7Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideADD DISKNames a disk drive and adds it to the controller’s confi

5–8 CLI Commands SwitchesNOTRANSPORTABLE (Default)TRANSPORTABLEIndicates whether a disk drive can be accessed exclusively by StorageWorks controllers.

5–9Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide Setting the switch to REMOTE forces a disk to be NOTRANSPORTAB

5–10 CLI Commands This example creates a host-addressable unit after the disk is added:INITIALIZE DISK20000 2 0 0ADD UNIT D199 DISK20000This example s

5–11Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideADD MIRRORSETNames a mirrorset and adds it to the controller co

5–12 CLI Commands Specify COPY=FAST to allow the creation of mirrored data to take precedence over other controller operations. When you specify COPY=

5–13Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSpecify POLICY=BEST_FIT to choose a replacement disk drive from

While Compaq Computer Corporation believes the information included in this manual is correct as of the date of publication, it is subject to change w

xx About This Guide Required ToolsYou’ll need the following tools to service the controller, cache module, external cache battery (ECB), the Power Ver

5–14 CLI Commands Specify READ_SOURCE=ROUND_ROBIN to sequentially direct read requests to each local mirrorset disk. The controller equally queries al

5–15Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSee alsoADD DISKADD UNITDELETE container-nameINITIALIZEMIRRORRE

5–16 CLI Commands ADD PASSTHROUGHCreates a passthrough container. A passthrough container bypasses controller processing and allows the host to have d

5–17Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidescsi-port-target-lunIndicates the SCSI device PTL address. Plac

5–18 CLI Commands See alsoADD UNITDELETE container-nameSHOW DEVICESSHOW PASSTHROUGHSHOW passthrough-name

5–19Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideADD RAIDSETNames a RAIDset and adds the RAIDset to the controll

5–20 CLI Commands SwitchesPOLICY=BEST_FITPOLICY=BEST_PERFORMANCE (Default)NOPOLICYSet the selection criteria the controller uses to choose a replaceme

5–21Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSpecify NORMAL to balance other controller operations with the

5–22 CLI Commands ADD UNIT D70 RAID8This example shows how you can create a three-member RAIDset from the members of a reduced four-member RAIDset. Do

5–23Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideADD SPARESETAdds a disk drive to the spareset.SyntaxADD SPARESE

xxiCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideRelated PublicationsThe following table lists some of the Compaq

5–24 CLI Commands ADD STRIPESETNames a stripeset and adds it to the controller configuration. Stripesets are sometimes referred to as RAID level 0 sto

5–25Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExamplesThis example shows how to create a stripeset named STRI

5–26 CLI Commands See alsoADD UNITADD MIRRORSETDELETE container-nameINITIALIZESHOW STORAGESETSHOW STRIPESETSHOW stripeset-name

5–27Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideADD UNITCreates a logical unit from a device, container, or par

5–28 CLI Commands SwitchesTable 5–3 lists all switches for the ADD UNIT command and identifies which switches may be used with each type of device or

5–29Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideENABLE_ACCESS_PATH=DISABLE_ACCESS_PATH=THIS_PORT_1_ENABLE_ACCES

5–30 CLI Commands PARTITION=partition_numberIdentifies the unit number for a partition on a container. The partition-number identifies the partition a

5–31Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSelect PREFERRED_PATH=THIS_CONTROLLER to instruct “this control

5–32 CLI Commands RUN (Default)NORUNControls the unit’s availability to the host. Specify RUN to make a unit available to the host.Specify NORUN to ma

5–33Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSpecify WRITEBACK_CACHE for all new RAIDsets, mirrorsets, and u

xxii About This Guide Revision HistoryThis is a new document.RA8000/ESA12000 HSZ80 ACS V8.3 for DIGITAL UNIX Quick Setup Guide388700-001 AA-RF9XA-TERA

5–34 CLI Commands See alsoCREATE_PARTITIONDELETE unit-numberSET unit-numberSHOW UNITS

5–35Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCLEAR_ERRORS CLIStops the display of current or previous error

5–36 CLI Commands CLEAR_ERRORS controller INVALID_CACHEClears an invalid cache error and allows the controller and cache to resume operation. If the e

5–37Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSpecify NODESTROY_UNFLUSHED_DATA in the following situations:

5–38 CLI Commands CLEAR_ERRORS device-name UNKNOWNIf a device failure causes the controller to label the device as unknown, the controller does not ch

5–39Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSee alsoCLEAR_ERRORS CLICLEAR_ERRORS INVALID_CACHECLEAR_ERRORS

5–40 CLI Commands CLEAR_ERRORS unit-number LOST_DATAClears lost data errors on a unit and all partitions on the unit’s container are affected.The cont

5–41Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSee alsoCLEAR_ERRORS CLICLEAR_ERRORS INVALID_CACHECLEAR_ERRORS

5–42 CLI Commands CLEAR_ERRORS unit-number UNWRITEABLE_DATAClears an unwriteable data error on a unit.It affects all partitions on the same container.

5–43Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSee alsoCLEAR_ERRORS CLICLEAR_ERRORS INVALID_CACHECLEAR_ERRORS

1–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideChapter 1General DescriptionThis chapter illustrates and describ

5–44 CLI Commands CONFIGURATION RESETErases the entire configuration on “this controller,” restores the controller’s default configuration, and shuts

5–45Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCONFIGURATION RESTORECopies a controller’s configuration from t

5–46 CLI Commands See alsoCONFIGURATION RESETCONFIGURATION SAVEINITIALIZE

5–47Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCONFIGURATION SAVEForces a current copy of configuration inform

5–48 CLI Commands CREATE_PARTITIONDivides a non-transportable disk drive storageset into several, separately addressable storage units. The command ma

5–49Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideTo create a partition, specify a percentage of the container’s

5–50 CLI Commands ExampleThis example shows how to create a RAIDset named RAID9 and divide it into four equal parts. It also creates host-addressable

5–51Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDELETE container-name Deletes a container belonging to the cont

5–52 CLI Commands This example shows how to delete a RAIDset named RAID9:DELETE RAID9See alsoDELETE FAILEDSETDELETE SPARESETUNMIRROR

5–53Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDELETE FAILEDSETRemoves a disk drive from the failedset. The fa

1–2 General Description Typical InstallationFigure shows the major components, or basic building blocks, of the storage subsystem that is comprised o

5–54 CLI Commands DELETE SPARESETRemoves a disk drive from the spareset.SyntaxDELETE SPARESET disk-nameParameterdisk-nameIdentifies the disk drive bei

5–55Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDELETE unit-number Deletes a logical unit from the controller c

5–56 CLI Commands See alsoADD UNITCLEAR_ERRORS LOST_DATACLEAR_ERRORS UNWRITEABLE_DATADELETE container-nameDELETE FAILEDSETSDELETE SPARESETSDESTROY_PAR

5–57Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDESTROY_PARTITIONMarks the area reserved for a partition as ava

5–58 CLI Commands ExampleThis example shows how to delete the unit for partition 2 on RAIDset RAID9 and destroy the partition:DELETE D102DESTROY_PARTI

5–59Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDIRECTORYLists the diagnostics and utilities available on “this

5–60 CLI Commands HELPDisplays a brief explanation of how to use the question mark (?) to obtain help on any command or CLI function. You must precede

5–61Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThis example shows how to get help on the SET command using the

5–62 CLI Commands INITIALIZEInitializes or destroys metadata on a container. During initialization, a small amount of disk space is reserved for contr

5–63Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideParameterscontainer-nameSpecifies the container to initialize.

1–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 1–1. Basic Building Block12438 7 916131415121110CXO6742A

5–64 CLI Commands The default chunk size for storagesets with less than nine members is 256 blocks, or 128 kilobytes (K). The default chunk size for s

5–65Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThe SAVE_CONFIGURATION switch requires only one disk to be ini

5–66 CLI Commands TRANSFER_RATE_REQUESTED = 20MHZ (synchronous 10.00 MHZ negotiated) LOCAL Size: 4108970 blocks Confi

5–67Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideLOCATEIndicates the physical location of configured units, stor

5–68 CLI Commands DISKSCauses the green device fault LEDs of all configured disks to flash. Enter LOCATE CANCEL to turn off the LEDs.PTL (SCSI-locatio

5–69Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExamplesThis example shows how to cause the amber device fault

5–70 CLI Commands MIRRORCreates a one-member mirrorset from a single disk. This command is used only on disks configured as units or members of a stri

5–71Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSwitchesCOPY=FASTCOPY=NORMAL (Default)Sets the speed at which t

5–72 CLI Commands Specify POLICY=BEST_PERFORMANCE to choose a replacement disk drive from the spareset with the best performance. The controller attem

5–73Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSee alsoADD MIRRORSETREDUCESHOW MIRRORSETSUNMIRROR

1–4 General Description Table 1–1 Basic Building Blocks List Item Description1 BA370 rack-mountable enclosure2 Cooling fan3 Power cable kit4 I/O modu

5–74 CLI Commands POWEROFFPowers off all disk units in a cabinet and turns off the cabinet power in all cabinets associated with the controller.Syntax

5–75Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSECONDS=nnAs soon as the POWEROFF command is entered, all disk

5–76 CLI Commands In dual-redundant controller configurations, if both controllers can’t be shutdown, then both controllers and their ECB chargers rem

5–77Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideREDUCERemoves member disk drives from mirrorsets and decreases

5–78 CLI Commands The actual number of members in the mirrorset can never be greater than the nominal number of members. The disks to be removed do no

5–79Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExampleThis example shows how to remove DISK20100, DISK20200, a

5–80 CLI Commands See alsoADD MIRRORSETMIRRORRUN CLONESHOW MIRRORSETSET mirrorset-name

5–81Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideRENAMERenames a container.SyntaxRENAME old-container-name new-c

5–82 CLI Commands RENAME DISK10000 MYDISKSHOW DISKSName Type Port Targ Lun Used by ----------------------------------------------------------------- M

5–83Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideRESTART controller Flushes all user data from the specified con

1–5Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSummary of HSZ80 FeaturesTable 1–2 summarizes the features of th

5–84 CLI Commands IMMEDIATE_SHUTDOWNNOIMMEDIATE_SHUTDOWN (Default) Instructs the controller when to shutdown.CAUTION: The IMMEDIATE_SHUTDOWN switc

5–85Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideRETRY_ERRORS unit-number UNWRITEABLE_DATACauses the controller

5–86 CLI Commands RUNRuns a diagnostic or utility program on “this controller.” Diagnostic and utility programs only run on “this controller.”SyntaxRU

5–87Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCAUTION: Run the DILX utility in the autoconfigure mode only a

5–88 CLI Commands ExampleThis example shows how to start the DILX diagnostic program:RUN DILX...See alsoDIRECTORY

5–89Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSELFTEST controller Flushes the data from the specified control

5–90 CLI Commands IMMEDIATE_SHUTDOWNNOIMMEDIATE_SHUTDOWN (Default)Instructs the controller whether to flush the write-back cache or not.CAUTION: The

5–91Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSET controller Changes parameters on the specified controller.S

5–92 CLI Commands PORT_1_ IDNOPORT_1_IDPORT_2_IDNOPORT_2_IDMIRRORED_CACHENOMIRRORED_CACHENonePORT _1_PREFERRED_IDNOPORT_1_PREFERRED_IDPORT _2_PREFERRE

5–93Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideALLOCATION_CLASSAllocation class is a unique identification num

1–6 General Description Maximum number of members in a stripeset 24Maximum number of physical devices in a striped mirrorset48Maximum host port transf

5–94 CLI Commands CAUTION: Setting CACHE_UPS without having a UPS or similar backup system in place may result in data loss if power is interrupted.S

5–95Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThe HOST_FUNCTION switch assigns only one host function to the

5–96 CLI Commands PORT_1_ID=(n1,n2,n3...)NOPORT_1_IDPORT_2_ID=(n1,n2,n3...)NOPORT_2_IDAssigns one to fifteen SCSI target ID numbers (0 through 15) to

5–97Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThe following tasks are performed when the NOMIRRORED_CACHE swi

5–98 CLI Commands PORT_1_PREFERRED_ID=(n1,n2,n3...)NOPORT_1_PREFERRED_IDPORT_2_PREFERRED_ID=(n1,n2,n3...)NOPORT_2_PREFERRED_IDMay be set only when dua

5–99Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSCSI_VERSION=SCSI-2 (Default)SCSI_VERSION=SCSI-3Specifies the h

5–100 CLI Commands PORT_1_TRANSFER_RATE_REQUESTED=20MHZPORT_1_TRANSFER_RATE_REQUESTED=10MHZPORT_1_TRANSFER_RATE_REQUESTED=5MHZPORT_1_TRANSFER_RATE_REQ

5–101Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExamplesThis example shows how to change the other controller’

5–102 CLI Commands SET device-name Changes the transportable characteristics and the maximum data transfer rate between the controller and the specifi

5–103Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideTRANSFER_RATE_REQUESTED=ASYNCHRONOUSTRANSFER_RATE_REQUESTED=20

1–7Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThe HSZ80 Array Controller Your controller is the intelligent br

5–104 CLI Commands ExamplesThis example shows how to set the data transfer rate of DISK20000 to 5MHz:SET DISK20000 TRANSFER_RATE_REQUESTED=5MHZThis ex

5–105Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSET EMUSets operating parameters for the environmental monitor

5–106 CLI Commands .If any of the setpoints assigned to a slave EMU do not match the corresponding setpoints assigned to the master EMU, the slave EMU

5–107Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThe EMU instructs the fans to operate at high speed when any o

5–108 CLI Commands SET FAILEDSETChanges the automatic replacement policy for the failedset.SyntaxSET FAILEDSET SwitchesAUTOSPARENOAUTOSPARESpecifies t

5–109Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDisks that you plan to use for AUTOSPARE must not have valid m

5–110 CLI Commands SET FAILOVERConfigures both controllers to operate in a dual-redundant, transparent failover, configuration. This allows both contr

5–111Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExampleThis example shows how to set the controllers in a dual

5–112 CLI Commands SET mirrorset-name Changes the characteristics of a mirrorset, including the addition and removal of members.SyntaxSET mirrorset-na

5–113Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDT_SUPPORTNODT_SUPPORTSpecifies if disaster tolerant functiona

JAPANUSAThis equipment generates, uses, and may emit radio frequency energy. The equipment has been type tested and found to comply with the limits fo

1–8 General Description From the host’s perspective, the controller is simply another device connected to one of its I/O buses. Consequently, the host

5–114 CLI Commands REMOVE=disk-name Instructs the controller to remove a member from an existing mirrorset. The disk drive specified by disk-name is r

5–115Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide The replacement policy is set to NOPOLICY The mirrorset is

5–116 CLI Commands Specify NOPOLICY to prevent the controller from automatically replacing a failed disk device. The mirrorset operates in a reduced s

5–117Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThis example shows how to remove member DISK30000 from mirrors

5–118 CLI Commands SET MULTIBUS_FAILOVERPlaces “this controller” and the “other controller” into a dual-redundant (failover) configuration within a mu

5–119Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDue to the amount of information being passed from one control

5–120 CLI Commands SET NOFAILOVERReconfigures both controllers to operate in a nondual-redundant (nonfailover) configuration. Immediately after enteri

5–121Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSpecify NODESTROY_UNFLUSHABLE_DATA to leave the unwritten data

5–122 CLI Commands SET NOMULTIBUS_FAILOVERReconfigures both controllers to operate in a non-dual-redundant (non-failover) configuration. Immediately a

5–123Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideUnder some circumstances, the data in a failed controller’s wr

1–9Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 1–3. HSZ80 Array ControllerCXO6284B1 2 3 4 5 6

5–124 CLI Commands SET RAIDset-name Changes the characteristics of a RAIDset.SyntaxSET RAIDset-nameParametersRAIDset-nameSpecifies the name of the RAI

5–125Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideRECONSTRUCT=FASTRECONSTRUCT=NORMAL (Default)Sets the speed at

5–126 CLI Commands REPLACE=disk-nameInstructs the controller to add a disk member to an existing RAIDset if the following conditions are met: The rep

5–127Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThis example shows how to add disk DISK20100 to the reduced RA

5–128 CLI Commands SET unit-number Changes the characteristics of a unit.SyntaxSET unit-numberParameterunit-numberSpecifies the logical unit number to

5–129Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideTable 5–8 SET UNIT Switches for Existing ContainersNOTE: ERR

5–130 CLI Commands ENABLE_ACCESS_PATH=DISABLE_ACCESS_PATH=THIS_PORT_1_ENABLE_ACCESS_PATH=THIS_PORT_1_DISABLE_ACCESS_PATH=THIS_PORT_2_ENABLE_ACCESS_PAT

5–131Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuidePARTITION=partition_numberIdentifies the unit number for a par

5–132 CLI Commands Select PREFERRED_PATH=THIS_CONTROLLER to instruct “this controller” to bring the unit online.Select PREFERRED_PATH=OTHER_CONTROLLER

5–133Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideREADAHEAD_CACHE (Default)NOREADAHEAD_CACHEEnables the controll

1–10 General Description Figure 1–4. Parts Used in Configuring the HSZ80 Array Controller CXO6492B1 2 3 4 5 616789104532Table 1–4 Descript

5–134 CLI Commands Specify WRITE_PROTECT to prevent host write operations to the unit. However, the controller may still write to a write-protected RA

5–135Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExampleThis example shows how to enable write protect and turn

5–136 CLI Commands SHOWDisplays information about controllers, storagesets, devices, partitions, and units. The SHOW command may not display some info

5–137Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidedevice-typeSpecifies the type of devices you want to be displa

5–138 CLI Commands UNITSDisplays information for all units configured to the controller.If the underlying container is a mirrorset with DT_SUPPORT, it

5–139Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExamplesThis example shows how to display a listing of disks:S

5–140 CLI Commands Switches: NOTRANSPORTABLE TRANSFER_RATE_REQUESTED = 20MHZ (synchronous 20.00 MHZ negotiated) REM

5–141Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide DT_SUPPORT State: RECONSTRUCTING

5–142 CLI Commands This example shows how to display the current settings for the EMU:SHOW EMUEMU CABINET SETTINGS SENSOR_1_SETPOINT 35 DEGREES

5–143Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSHUTDOWN controller Flushes all user data from the specified c

1–11Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide➆Ferrite bead➇Terminator➈Jumper cable➉Maintenance port cableTab

5–144 CLI Commands IMMEDIATE_SHUTDOWNNOIMMEDIATE_SHUTDOWN (Default)Instructs the controller when to shutdown.CAUTION: The IMMEDIATE_SHUTDOWN switch c

5–145Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideUNMIRRORConverts a one-member mirrorset back to a non-mirrored

5–146 CLI Commands See alsoADD MIRRORSETMIRRORREDUCERUN CLONESET mirrorset-name

A–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideAppendix ASystem ProfilesThis appendix contains device and stora

A–2 System Profiles Device ProfileType of StoragesetDevice NameUnit NumberDevice SwitchesInitialize SwitchesUnit Switches_____ Platter disk drive ___

A–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideStorageset ProfileType of StoragesetStorageset Name...Disk

A–4 System Profiles Enclosure TemplatePowerSupplyPower SupplyPowerSupplyPowerSupplyPowerSupplyPowerSupplyPowerSupplyPowerSupply

B–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideAppendix BController SpecificationsThis appendix contains physic

B–2 Controller Specifications Physical and Electrical Specifications for the ControllerTable B–1 lists the physical and electrical specifications for

B–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideEnvironmental SpecificationsThe HSZ80 array controller is intend

1–12 General Description Figure 1–5. Optional Maintenance Port Cable for a Terminal ConnectionEach controller is supported by its own cache module. F

B–4 Controller Specifications Table B–3 Maximum Operating Environmental SpecificationsCondition SpecificationTemperature +10° to +40°C (+50° to +104°

GL–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideGlossary This glossary defines terms pertaining to the HSZ80. I

GL–2 Glossary bit A single binary digit having a value of either 0 or 1. A bit is the smallest unit of data a computer can process.block Also called a

GL–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidecold swap A method of device replacement that requires the enti

GL–4 Glossary data striping The process of segmenting logically sequential data, such as a single file, so that segments can be written to multiple ph

GL–5Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidedual-simplex A communications protocol that allows simultaneous

GL–6 Glossary FD SCSI The fast, narrow, differential SCSI bus with an 8-bit data transfer rate of 10 MB/s. See also FWD SCSI and SCSI.flush The act of

GL–7Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidehost compatibility modeA setting used by the controller to prov

GL–8 Glossary I/O module A 16-bit SBB shelf device that integrates the SBB shelf with either an 8-bit single ended, 16-bit single-ended, or 16-bit dif

GL–9Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideMB/s Megabytes per second. Approximately one million (106) byt

1–13Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 1–6. Location of Controllers and Cache ModulesIMPORTANT

GL–10 Glossary normal member A mirrorset member that, block-for-block, contains the same data as other normal members within the mirrorset. Read reque

GL–11Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guideparity check A method of detecting errors when data is sent ov

GL–12 Glossary protocol The conventions or rules for the format and timing of messages sent and received.PTL Port-Target-LUN. The controller’s method

GL–13Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideRAID level 3/5 A Compaq-developed RAID storageset that stripes

GL–14 Glossary RFI Radio Frequency Interference. The disturbance of a signal by an unwanted radio signal or frequency.replacement policy The policy sp

GL–15Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSCSI ID number The representation of the SCSI address that ref

GL–16 Glossary storage subsystem The controllers, storage devices, shelves, cables, and power supplies used to form a mass storage subsystem.storage u

GL–17Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidesurviving controller The controller in a dual-redundant config

GL–18 Glossary VHDCI Very High Density Cable Interface. A 68-pin interface. Required forUltra SCSI connections.virtual terminal A software path from a

GL–19Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidewrite-through cache A cache management technique for retaining

1–14 General Description Figure 1–7. HSZ80 Controller Operator Control Panel (OCP)See Figure 1–3 on page 1–9 for the location of the OCP on the HSZ80

I–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideIndexAAC input moduleparts, 1–4ADD DISK, 5–7LOCAL, 5–8NOTRANSPOR

I–2 Index Addressesproviding with the PVA module, 2–25Addressing PTL convention, 3–36ALLOCATION_CLASSSET controller, 5–93Array of disk drives, 3–8AU

I–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidewrite-through caching, 1–21Cache policiesfault-tolerance for wri

I–4 Index CLEAR_ERRORS unit-number UNWRITEABLE_DATA, 5–42CONFIGURATION RESET, 5–44CONFIGURATION RESTORE, 5–45CONFIGURATION SAVE, 5–47CREATE_PARTITI

I–5Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCONFIGURATION RESET, 5–44CONFIGURATION RESTORE, 5–45Configuratio

I–6 Index OCP, 1–8, 1–13other controller defined, 2–28part numbers of parts used in configuring, 1–10parts, 1–4parts used in configuring, 1–10patchi

I–7Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDELETE container-name, 5–51DELETE FAILEDSET, 5–53DELETE FAILEDSE

I–8 Index DILXgeneral description, 1–16DILX, running, 5–86DIMMscache module memory configurations, 1–18supported, 1–5DIRECT, running, 5–87DIRECTORY,

I–9Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDual-redundant configurationECB, 1–29Dual-redundant controller c

1–15Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideUtilities and ExercisersThe controller’s software includes the

I–10 Index Failoverdisabling, 5–120, 5–122general description, 2–29multiple-bus, 2–30transparent, 2–29FAILSAFE, error mode, 5–132Failuresdisplaying

I–11Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideHSUTIL, running, 5–87HSZ80 Array Controller Subsystem. See Stor

I–12 Index CANCEL, 5–67container-name, 5–68DISKS, 5–68parameter, 5–67PTL (SCSI-location), 5–68unit-number, 5–68UNITS, 5–68Lost data error, clearing,

I–13Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidedescription, 3–2, 3–12displaying information, 5–136duplicating

I–14 Index NOPORT_2_IDSET controller, 5–96NOPORT_2_PREFERRED_IDSET controller, 5–98NOPORT_2_TRANSFER_RATE_REQUESTEDSET controller, 5–100NOPREFERRED_

I–15Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guideguidelines, 3–41maximum supported, 1–5, 2–2planning, 3–40settin

I–16 Index See also Device ports, Host portsPower cableparts, 1–4Power cable kitparts, 1–4Power sourceenabling write-back caching, 1–22Power supplyp

I–17Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guidechanging characteristics, 5–124changing switches, 4–17choosing

I–18 Index Restoring configuration, 5–45RETRY_ERRORS unit-number UNWRITEABLE_DATA, 5–85Revision history, xxiiRUN, 5–86ADD UNIT, 5–32CHVSN, 5–86CLCP,

I–19Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuidePORT_1_PREFERRED_ID, 5–98PORT_1_TRANSFER_RATE_REQUESTED, 5–100P

1–16 General Description Disk Inline ExerciserUse the disk inline exerciser (DILX) to investigate the data-transfer capabilities of disk drives. DILX

I–20 Index controller behavior at restart, 5–84controller behavior at shutdown, 5–144controller behavior selftest, 5–90controller cache flush timer,

I–21Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSingle-disk unitsbacking up, 3–20configuring using CLI, 4–9disp

I–22 Index description, 3–2, 3–9displaying information, 5–136initializing, 5–62maximum number of members, 1–6, 2–2mirroring, 5–70planning, 3–10renam

I–23Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThis controller defined, 2–28This controller, defined, xviiiTig

I–24 Index See also Config utilitySee also HSUTILTroubleshooting and maintaining the controllerutilities and exercisers, 1–15Typographical conventio

I–25Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideVTDPY, running, 5–87WWrite performance, 3–54WRITE_PROTECTADD UN

1–17Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideField Replacement UtilityUse the field replacement utility (FRU

1–18 General Description Cache ModuleEach controller requires a companion cache module as shown in Figure 1–8. Table 1–7 lists the descriptions and pa

1–19Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 1–8. Cache ModuleCXO6306B1453~2Table 1–7 Location of C

1–20 General Description Caching TechniquesThe cache module supports the following caching techniques to increase the subsystem’s read and write perfo

1–21Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideThe controller then anticipates subsequent read requests and be

1–22 General Description Fault-Tolerance for Write-Back CachingThe cache module supports nonvolatile memory and dynamic cache policies to protect the

1–23Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideTable 1–9 shows the cache policies resulting from a full or par

1–24 General Description DIMM or cache memory controller chip failureGood Data integrity: Write-back data that was not written to media when failure o

1–25Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCache Board FailureGood Same as for DIMM failure. Data integri

1–26 General Description Less than 50% chargedAt least 50% chargedData loss: No.Cache policy: Controller A supports write-through caching only; contro

1–27Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFailed At least 50% chargedData loss: No.Cache policy: Controll

vCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideAbout This GuideGetting Help. . . . . . . . . . . . . . . . . . .

1–28 General Description Failed Less than 50% chargedData loss: No.Cache policy: Both controllers support write-through caching only.Failover: In tran

1–29Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideExternal Cache BatteryTo preserve the write-back cache data in

1–30 General Description Figure 1–9. ECB for Dual-Redundant Controller ConfigurationsCACHEPOWERSTATUSSHUT OFFCACHEPOWERSTATUSSHUT OFF~CXO6305B1432Ta

1–31Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCharging DiagnosticsWhenever you restart the controller, its di

2–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideChapter 2Configuring an HSZ80 Array ControllerThis chapter expla

2–2 Configuring an HSZ80 Array Controller IntroductionUse the Quick Setup Guide that came with your subsystem to unpack and set up your subsystem prio

2–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConfiguring an HSZ80 Array ControllerYou can use this procedure

2–4 Configuring an HSZ80 Array Controller CLI Commands—A few commands can be used while configuring the controller:❏ CLEAR_ERRORS CLI—Clears all err

2–5Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConfiguring a Single ControllerFigure 2–1. Cabling for a Single

vi Chapter 3Creating StoragesetsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–6 Configuring an HSZ80 Array Controller Follow these steps to configure a controller:NOTE: This procedure has been written for first-time configuri

2–7Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide6. Set the host function mode for the controller using the targe

2–8 Configuring an HSZ80 Array Controller 10. Enter any other optional CLI commands for your configuration. See “Optional Steps,” page 2–22 and Chapte

2–9Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConnecting a Single Controller to the HostFollow these steps and

2–10 Configuring an HSZ80 Array Controller Configuring Dual-Redundant Controllers in Transparent Failover ModeFigure 2–2. Cabling for a Dual-Redundan

2–11Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFollow these steps to configure a controller:NOTE: This proced

2–12 Configuring an HSZ80 Array Controller 5. Put this controller into transparent failover mode. Use the following command:CAUTION: Issuing the SET

2–13Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide8. If you are configuring controllers in transparent failover m

2–14 Configuring an HSZ80 Array Controller 11. Set the time on the controller, which provides a baseline for replacing the external battery, using the

2–15Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConnecting in Transparent Failover Mode to the HostUse the foll

viiCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideChapter 5CLI CommandsCLI Overview . . . . . . . . . . . . . .

2–16 Configuring an HSZ80 Array Controller Configuring Dual-Redundant Controllers in Multiple-Bus Failover ModeFigure 2–3. Cabling for a Dual-Redunda

2–17Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFollow these steps to configure a controller:NOTE: This proced

2–18 Configuring an HSZ80 Array Controller 5. Put this controller in multiple-bus failover mode, using the following command:CAUTION: Issuing the SET

2–19Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide8. Set the host function mode for the controller using the targ

2–20 Configuring an HSZ80 Array Controller 11. Set up the battery discharge timer:a. Start Frutil using the following command:RUN FRUTILFrutil display

2–21Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideConnecting in Multiple-Bus Failover Mode to the HostUse the fol

2–22 Configuring an HSZ80 Array Controller 6. Repeat steps 3, 4, and 5 for connecting a third and a fourth host bus.IMPORTANT: The HSZ80 Array Contro

2–23Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSet the maximum data-transfer rateUse the following command:SET

2–24 Configuring an HSZ80 Array Controller UPS SupportNOTE: By default, the controller expects to use an external cache battery (ECB) as backup power

2–25Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSetting the PVA Module ID SwitchThe Power, Verification, and Ad

viii MIRROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–70POWEROFF . . . . .

2–26 Configuring an HSZ80 Array Controller Establishing a Local Connection to the ControllerYou can communicate with a controller locally or remotely.

2–27Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 2–5. PC/Terminal to Maintenance Port ConnectionCAUTION:

2–28 Configuring an HSZ80 Array Controller b. If you are using a terminal instead of a PC, you can order a cable from the local field service office a

2–29Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSelecting a Failover ModeIn selecting a failover mode, you have

2–30 Configuring an HSZ80 Array Controller For better subsystem performance, balance your assignment of target ID numbers across your dual-redundant

2–31Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideEnabling Mirrored Write-Back CacheBefore configuring dual-redun

2–32 Configuring an HSZ80 Array Controller Fault-ToleranceThe cache module supports the following features to protect the availability of its unwritte

2–33Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideSetting SCSI Target ID NumbersIn a subsystem, every SCSI device

2–34 Configuring an HSZ80 Array Controller You can view IDs on this controller with the following command:SHOW THIS_CONTROLLER FULLYou can view IDs on

2–35Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideUsing Preferred ID NumbersUse preferred SCSI target ID numbers

ixCompaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideAppendix ASystem ProfilesDevice Profile . . . . . . . . . . . .

3–1Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideChapter 3Creating StoragesetsThis chapter provides information t

3–2 Creating Storagesets IntroductionStoragesets are implementations of RAID technology, also known as a Redundant Array of Independent Disks. Every s

3–3Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideFigure 3–1. Units Created from Storagesets, Partitions, and Dri

3–4 Creating Storagesets Planning and Configuring StoragesetsUse this procedure to plan and configure the storagesets for your subsystem. Use the refe

3–5Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideCreating a Storageset and Device ProfileCreating a profile for y

3–6 Creating Storagesets Type of StoragesetStorageset Name...accept default valuesDisk Drives...DISK10300, DISK20300, DISK30300U

3–7Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideDetermining Storage RequirementsStart the planning process by de

3–8 Creating Storagesets Choosing a Storageset TypeDifferent applications may have different storage requirements, so you will probably want to config

3–9Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference GuideUsing Stripesets to Increase I/O PerformanceStripesets enhance I