HP Microsoft Windows Server 2003 for Itanium-based Systems instruction

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.

Diagnosing array problems 66

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HP Microsoft Windows Server 2003 for Itanium-based Systems Diagnosing array problems, Diagnostic tools, Post messages

Contents

HP Array Configuration Utility User Guide Audience assumptions Contents Diagnosing array problems Getting started Features and system requirementsInstalling ACU This section Overview for using ACU Setting the execution mode for Microsoft WindowsComparison of ACU execution modes Opening ACU in Local Application mode Choosing an operating mode Opening ACU in Browser mode Http//servername2301 Opening ACU through Systems Insight Manager Select Device Queries Typical Standard mode screen GUI operating modes Typical Configuration Wizards mode screen Completing the configuration process Typical Express Configuration mode screen Configuring 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 Begin Configuring a new controller Creating a logical drive Click Create a logical drive, and then click Begin Configuring 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 Begin Controller 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 Begin RA4x00 controllers Spare managementSelective Storage Presentation Click Spare Management, and then click Begin MSA and Smart Array Cluster storage controllers Configuring switches Click ACU Switch Configuration Splitting a mirrored array Recombining a split, mirrored array Modifying an existing configuration Introduction to scripting in ACU Command line syntaxScripting in ACU Operating modes Sample custom input script Cpqacuxe -i Filename Script file options Description of option categories in ACU scripting Action Control categoryController category Method LicenseKey, DeleteLicenseKey ClearConfigurationWithDataLossController RAIDArrayID RebuildPriority, ExpandPriority SurfaceScanDelayArray category SSPState Drive Logical Drive categoryOnlineSpare LogicalDrive StripeSize SizeSectors ArrayAccelerator ConnectionName Error reportingSSPAdaptersWithAccess HostMode ACU 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 variable Hiding warning prompts Typical proceduresExample command Querying a device Sample scenario Syntax Example commands Modifying the controller chassis nameExample Using Selective Storage Presentation Sample scenario Modifying connection names Managing host modes connection profiles Expanding an array Deleting target devicesIdentifying devices Extending a logical drive Migrating a logical drive Target modify raid=01+0156adg? ss=8163264128256default?Managing spare drives Target modify size=#max? forced Changing 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 scenario Rescanning the system = rescan Probability of logical drive failure Factors involved in logical drive failure Probability of logical drive failure Drive arrays and fault-tolerance methods Drive arrays Drive arrays and fault-tolerance methods Fault-tolerance methods Hardware-based fault-tolerance methods RAID 0-No fault tolerance AdvantagesDisadvantages RAID 1+0-drive mirroring RAID 5-distributed data guarding RAID 6 ADG-Advanced Data Guarding Comparing the hardware-based RAID methods RAID RAID 6 ADG Alternative fault-tolerance methods Selecting a RAID method Server Diagnostics Diagnosing array problemsDiagnostic tools Post messages Acronyms and abbreviations SSP Index Index