HP Microsoft Windows Server 2003 for Itanium-based Systems manual Array category, SurfaceScanDelay

Page 36

Read:write

RA4x00 with

RA4x00 with

All other controllers with

All other controllers

ratio

16MB cache

48MB cache

battery-backed cache

without battery-backed

 

 

 

 

cache

 

 

 

 

 

70:30

Y

Y

--

--

 

 

 

 

 

60:40

Y

Y

--

--

 

 

 

 

 

50:50

Y

Y

Y

--

 

 

 

 

 

40:60

--

Y

--

--

 

 

 

 

 

30:70

--

Y

--

--

 

 

 

 

 

25:75

--

Y

Y

--

 

 

 

 

 

0:50*

Y

--

--

--

 

 

 

 

 

0:75*

--

Y

--

--

 

 

 

 

 

0:100

--

--

Y

--

 

 

 

 

 

*The cache ratio percentages do not total 100 in these cases because the additional 16-MB or 48-MB cache modules are not used. Only the battery-backed write cache is used.

RebuildPriority, ExpandPriority

This option has three possible values: Low, Medium, and High. The default value for an unconfigured controller is Low.

SurfaceScanDelay

Enter a number between 1 and 30 to specify the duration of the surface scan delay in seconds.

SSPState

There are two settings for this option: Enable and Disable. If you do not specify a value for the SSP State, the existing setting remains unchanged.

NOTE: The SSPState option is valid only for controllers that enable SSP on a controller basis, such as the MSA1000 or the Smart Array Cluster Storage controllers. RA4x00 controllers support SSP that is enabled on a logical drive basis, and use the LogicalDriveSSPState option ("LogicalDriveSSPState" on page 38) instead.

If you enable SSP, you must also specify an adapter for one or more logical drives by using the SSPAdaptersWithAccess option ("SSPAdaptersWithAccess" on page 39). Otherwise, SSP is automatically disabled.

Array category

These options are available under the Array category:

•Array (on page 36)

•OnlineSpare (on page 37)

•Drive (on page 37)

Array

Enter a letter in the range A–Z or a–f to identify the array that is to be created or reconfigured, bearing in mind these additional limitations:

•In Configure mode, ACU creates a new array. The letter value that you specify must be the next available letter in the sequence, considering the number of existing arrays on the controller.

Scripting in ACU 36

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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 sectionOverview for using ACU Setting the execution mode for Microsoft WindowsComparison 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 screenConfiguring a new controller Using Standard Configuration modePossible 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 an existing configuration Modifying a configuration using Standard Configuration modeChoices available after opening ACU Modifying a configuration using Express mode Modifying a configuration using the Configuration wizardsClear Configuration Click Express Configuration, and then click BeginController settings Click Controller Settings, and then click BeginCreate an array Create a logical drive Delete arrays Delete logical drives Expand ArrayClick 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 Using the Command Line Interface Overview of the ACU CLIRunning the CLI Command variable CLI syntaxKeyword abbreviations Target variableTypical procedures Example commandHiding warning prompts Querying a deviceSample scenario SyntaxExample commands Modifying the controller chassis nameExample 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 Rebuild Priority setting Changing the Expand Priority settingChanging the controller cache ratio Changing the surface scan delay time Re-enabling a failed logical driveEnabling 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 methodsRAID 0-No fault tolerance AdvantagesDisadvantages 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
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