HP Microsoft Windows Server 2003 for Itanium-based Systems manual Diagnosing array problems

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Diagnosing array problems

In this section
Diagnostic tools	66
Diagnostic tools
Several diagnostic tools provide feedback about problems with arrays. The most important are:

•ADU

This utility is available on the SmartStart CD. The meanings of the various ADU error messages are provided in the HP Servers Troubleshooting Guide.

•POST messages

Smart Array controllers produce diagnostic error messages at reboot. Many of these POST messages are self-explanatory and suggest corrective actions. For more information about POST messages, refer to the HP Servers Troubleshooting Guide.

•Server Diagnostics

To use Server Diagnostics:

a.Insert the SmartStart CD into the server CD-ROM drive.

b.Click Agree when the license agreement is displayed, and select the Maintenance tab.

c.Click Server Diagnostics, and follow the on-screen prompts and instructions.

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Contents HP Array Configuration Utility User Guide Audience assumptions Contents Diagnosing array problems Getting started Features and system requirementsInstalling ACU 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 Click Finish Using the configuration wizardsCreating an array 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 Clear Configuration Modifying a configuration using Express modeModifying a configuration using the Configuration wizards 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 Click Extend logical drive, and then click Begin Extend logical driveMigrate a logical drive Click Migrate a logical drive, and then click BeginRA4x00 controllers Spare managementSelective Storage Presentation 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 Introduction to scripting in ACU Command line syntaxScripting in ACU Operating modesSample custom input script Cpqacuxe -i FilenameScript file options Description of option categories in ACU scriptingAction Control categoryController category MethodLicenseKey, DeleteLicenseKey ClearConfigurationWithDataLossController RAIDArrayIDRebuildPriority, ExpandPriority SurfaceScanDelayArray category SSPStateDrive Logical Drive categoryOnlineSpare LogicalDriveStripeSize SizeSectors ArrayAcceleratorConnectionName Error reportingSSPAdaptersWithAccess HostModeACU scripting error messages 0-9, !, @, #, *, , , ,, -, , +, , ., /, and space. The ID Current configuration Using the Command Line Interface Overview of the ACU CLIRunning the CLI Keyword abbreviations Command variableCLI syntax Target variableHiding warning prompts Typical proceduresExample command Querying a deviceSample scenario SyntaxExample commands Modifying the controller chassis nameExample Using Selective Storage Presentation Sample scenarioModifying connection names Managing host modes connection profilesExpanding an array Deleting target devicesIdentifying devices Extending a logical driveMigrating a logical drive Target modify raid=01+0156adg? ss=8163264128256default?Managing spare drives 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 Disabling a redundant controller Setting the targetEnabling or disabling the array accelerator 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 methodServer Diagnostics Diagnosing array problemsDiagnostic tools Post messagesAcronyms and abbreviations SSP Index Index