Adaptec Solutions for Disk Drive Failures on 1420SA Network Cards

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Chapter 11: Solving Problems ● 46

Failed Disk Drive Not Protected by a Hot Spare

When an array is not protected by a hot spare, if a disk drive in that array fails, remove and replace the failed disk drive. The controller detects the new disk drive and begins to rebuild the array.

If the controller fails to rebuild the array, check that the cables, disk drives, and controllers are properly installed and connected. Then, if necessary, use Adaptec Storage Manager to rebuild the array. For instructions, refer to the Adaptec Storage Manager User’s Guide or online Help.

Failure in Multiple Arrays Simultaneously

If there’s a disk drive failure in more than one array at the same time (one failure per array), and the arrays have hot spares protecting them, the controller rebuilds the arrays with these limitations:

●A hot spare must be of equal or greater size than the failed disk drive it’s replacing.

●Failed disk drives are replaced with hot spares in the order in which they failed. (The array that includes the disk drive that failed first is rebuilt first, assuming an appropriate hot spare is available—see bullet above.)

If there are more disk drive failures than hot spares, see Failed Disk Drive Not Protected by a Hot Spare in previous section.

Disk Drive Failure in a RAID 0 Array

Because RAID 0 volumes do not include redundancy, if a disk drive fails in a RAID 0 array, the data can’t be recovered.

Correct the cause of the failure or replace the failed disk drives. Then, restore your data (if available).

Multiple Failures in the Same Array

If more than one disk drive fails at the same time in the same RAID 1 array, the data can’t be recovered.

Correct the cause of the failure or replace the failed disk drives. Then, restore your data (if available).

In some instances, RAID 10 arrays may survive multiple disk drive failures, depending on which disk drives fail. For more information, refer to the Adaptec Storage Manager User’s Guide or online Help.

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Contents Serial ATA II 1430SA, 1420SA, 1220SA HostRAID Controllers Copyright Adaptec Customer Support Limited 3-Year Hardware Warranty Regulatory Compliance Statements Contents Installing the HostRAID Controller Disk Drives Understanding Adaptec Storage Manager Safety Information About This Guide What You Need to Know Before You Begin How to Find More InformationTerminology Used in this Guide About Your HostRAID Controller Array Level Features HostRAID Controller FeaturesUpgrading the HostRAID Controller Firmware About the Adaptec 1430SA Controller About the Adaptec 1420SA Controller About the Adaptec 1220SA Controller Kit Contents System Requirements Kit Contents System RequirementsGetting Started Selecting Cables Choosing a RAID LevelSelecting Disk Drives Disk Drives for Your ControllerInstalling with an Operating System Installation OptionsBasic Installation Steps Installing on an Existing Operating SystemInstalling the HostRAID Controller Disk Drives Installing the HostRAID Controller Before You BeginChecking Your Controller and Devices Connecting Disk Drives to Sata HostRAID ControllersDetermining the Boot Controller Next StepsCreating a Bootable Array Creating an Array Setting the Boot ControllerCreating an Array with the ACU Select Express configuration..., then click Next Creating an Array with Adaptec Storage ManagerMaking Your Array Bootable Installing the Driver An Operating System Installing with Windows Creating a Driver DiskInstalling with Red Hat Linux Installing with Suse LinuxInstalling with NetWare Installing the Driver on an Existing Operating System Installing on Windows Installing on Red Hat or Suse Linux Installing on NetWareManaging Your Storage Space About the Hrconf Command Line Utility Installing Adaptec Storage ManagerAbout Adaptec Storage Manager About the AFU About the ARC UtilityWhich Utility Should I Use? Understanding Adaptec Storage Manager Features OverviewPhysical Devices View Changing How Drives are DisplayedLogical Devices View Collapsed and Expanded Views Component Views Solving Problems Recovering from a Disk Drive Failure Troubleshooting ChecklistFailed Disk Drive Protected by a Hot Spare Disk Drive Failure in a RAID 0 Array Failed Disk Drive Not Protected by a Hot SpareFailure in Multiple Arrays Simultaneously Multiple Failures in the Same ArrayUnderstanding RAID Understanding Drive Segments Selecting a RAID Level and Tuning PerformanceRAID Technology Overview Stripe-unit SizeRAID 0 Non-RAID Arrays RAIDRAID 1 Arrays RAID 10 ArraysUsing the ARC Utility Creating and Managing Arrays Introduction to the ARC UtilityRunning the ARC Utility Creating a New ArrayRAID Managing Arrays Rebuilding ArraysForce from Offline Configuring Disk Drives Managing Bootable Arrays and DevicesAdding/Deleting Hotspares Using SATASelect Atapi SupportSATASelect Options SmartFormatting and Verifying Disk Drives Using the AFU for DOS System Requirements IntroductionCompatibility Running the AFU from the Command Line Running the AFU from the GUISave Update AFU Command Line Step-by-Step Command SwitchesAfu update /C controllernumber Safety Information Electrostatic Discharge ESDTechnical Specifications DC Power Requirements Environmental SpecificationsCurrent Requirements Glossary See channel Initialize See configure Mirrored array/mirroring See RAID 1, RAID Area on each disk reserved for use by the RAID controller See simple volume, spanned volume Index Scsi Adaptec, Inc