HP Microsoft Windows Server 2003 for Itanium-based Systems manual Configuring a new controller

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The Configuration View panel displays a placeholder for the array that you are about to create. (If there are many physical drives connected to the controller, use the scrollbars in the Configuration View panel to see all the physical drives and arrays.)

3.Select the type of drive that you will use in the array.

4.Select the physical drives that you want to use in the array.

Use physical drives of comparable capacity.

ACU uses the same amount of space from each physical drive to build an array. Because this amount cannot exceed the capacity of the smallest physical drive, the extra capacity of any larger drive in the array is unusable.

For better system performance, use physical drives that are connected to different ports on the controller.

In RAID 5 configurations, keep the risk of logical drive failure low by assigning no more than 14 physical drives to the array.

Each time that you add a physical drive to the array, the configuration view is updated to show how much free space remains on the array.

5.Click Next when you have finished adding physical drives to the array.

6.If an unassigned physical drive of the appropriate capacity is available, ACU asks you whether you want to assign spare drives to the array.

If you do not want this array to have a spare, click No, and then click Next.

To assign spare drives to the array, click Yes, and then click Next. On the next screen, select the drives that you want to be the spares, and then click Next.

IMPORTANT: Assigning one or more spare drives to an array enables you to postpone replacement of faulty drives, but it does not increase the fault-tolerance level of any logical drives in the array. For example, a logical drive in a RAID 5 configuration suffers irretrievable data loss if two physical drives fail simultaneously, regardless of the number of spare drives assigned to it.

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Contents HP Array Configuration Utility User Guide Audience assumptions Contents Diagnosing array problems Features and system requirements Installing ACUGetting started This sectionSetting the execution mode for Microsoft Windows Overview for using ACUComparison of ACU execution modes Opening ACU in Local Application mode Choosing an operating modeOpening ACU in Browser mode Http//servername2301Opening ACU through Systems Insight Manager Select Device QueriesTypical Standard mode screen GUI operating modesTypical Configuration Wizards mode screen Completing the configuration process Typical Express Configuration mode screen Using Standard Configuration mode Configuring a new controller Possible tasks in Standard Configuration mode Using Express Configuration mode Using the configuration wizards Creating an arrayClick Finish Click Create an array, and then click BeginConfiguring a new controller Creating a logical drive Click Create a logical drive, and then click BeginConfiguring a new controller Modifying a configuration using Standard Configuration mode Modifying an existing configurationChoices available after opening ACU Modifying a configuration using Express mode Modifying a configuration using the Configuration wizardsClear Configuration Click Express Configuration, and then click BeginClick Controller Settings, and then click Begin Controller settingsCreate an array Create a logical drive Delete arrays Expand Array Delete logical drivesClick Delete logical drives, and then click Begin Extend logical drive Migrate a logical driveClick Extend logical drive, and then click Begin Click Migrate a logical drive, and then click BeginSpare management Selective Storage PresentationRA4x00 controllers Click Spare Management, and then click BeginMSA and Smart Array Cluster storage controllers Configuring switches Click ACU Switch ConfigurationSplitting a mirrored array Recombining a split, mirrored arrayModifying an existing configuration Command line syntax Scripting in ACUIntroduction to scripting in ACU Operating modesSample custom input script Cpqacuxe -i FilenameScript file options Description of option categories in ACU scriptingControl category Controller categoryAction MethodClearConfigurationWithDataLoss ControllerLicenseKey, DeleteLicenseKey RAIDArrayIDSurfaceScanDelay Array categoryRebuildPriority, ExpandPriority SSPStateLogical Drive category OnlineSpareDrive LogicalDriveSize SectorsStripeSize ArrayAcceleratorError reporting SSPAdaptersWithAccessConnectionName HostModeACU scripting error messages 0-9, !, @, #, *, , , ,, -, , +, , ., /, and space. The ID Current configuration Overview of the ACU CLI Using the Command Line InterfaceRunning the CLI Command variable CLI syntaxKeyword abbreviations Target variableTypical procedures Example commandHiding warning prompts Querying a deviceSample scenario SyntaxModifying the controller chassis name Example commandsExample Using Selective Storage Presentation Sample scenarioModifying connection names Managing host modes connection profilesDeleting target devices Identifying devicesExpanding an array Extending a logical driveTarget modify raid=01+0156adg? ss=8163264128256default? Managing spare drivesMigrating a logical drive Target modify size=#max? forcedChanging the Expand Priority setting Changing the Rebuild Priority settingChanging the controller cache ratio Re-enabling a failed logical drive Changing the surface scan delay timeEnabling or disabling the drive cache Setting the target Enabling or disabling the array acceleratorDisabling a redundant controller Typical scenarioRescanning the system = rescanProbability of logical drive failure Factors involved in logical drive failureProbability of logical drive failure Drive arrays and fault-tolerance methods Drive arraysDrive arrays and fault-tolerance methods Fault-tolerance methods Hardware-based fault-tolerance methodsAdvantages RAID 0-No fault toleranceDisadvantages RAID 1+0-drive mirroring RAID 5-distributed data guarding RAID 6 ADG-Advanced Data GuardingComparing the hardware-based RAID methods RAID RAID 6 ADGAlternative fault-tolerance methods Selecting a RAID methodDiagnosing array problems Diagnostic toolsServer Diagnostics Post messagesAcronyms and abbreviations SSP Index Index