Adaptec ATA II 1220SA, ATA II 1430SA, ATA II 1420SA manual Managing Arrays, Rebuilding Arrays

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Appendix B: Using the ARC Utility ● 54

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To modify the Write Cache setting for an array, press Ctrl+W.

The ACU allows you to use drives of different sizes in a RAID 1. However, during a build operation, only the smaller drive can be selected as the source drive.

When migrating from single volume to RAID 0, migrating from a larger drive to a smaller drive is allowed. However, the destination drive must be at least half the capacity of the source drive.

It is not recommend that you migrate or build an array on Windows dynamic disks (volumes), as it will result in data loss.

5When you are finished, press Done.

Managing Arrays

Select the Manage Arrays option to perform these tasks:

●Rebuild Arrays

●View Array Properties

●Delete Arrays

●Enable/Disable Write Cache

●Verify Arrays

The following sections describe these operations in greater detail.

Rebuilding Arrays

Note: Rebuilding applies to Fault Tolerant arrays (RAID 1) only.

Before rebuilding an array, note the following:

●If no spare exists and a hard disk drive fails, you need to create a spare before you can rebuild an array. See Adding/Deleting Hotspares on page 56 before continuing your rebuild.

●If there is any medium error occuring on the disk while rebuilding, the operation is stopped and the array state is marked as degraded. You will be informed about the error (LBA no and port number of the drive are displayed).

By replacing a failed drive of a RAID 1 array with a new drive, you can rebuild to get the array to Optimal status and assume fault tolerance. You can perform a rebuild in the following ways:

●System Shutdown Rebuild

You can shut down the system and replace the failed drive with a new one (of equal or greater capacity). When the system is booted, you can assign the new drive as a spare, and this will start the Rebuild task. All the data from the good drive is copied to the new one, and the original RAID 1 array is recreated.

●Manual Rebuild

a From the Main Menu, select Manage Arrays. From the List of Arrays, select the array you want to rebuild.

b Press Ctrl+R to rebuild.

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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 How to Find More Information What You Need to Know Before You BeginTerminology Used in this Guide About Your HostRAID Controller HostRAID Controller Features Array Level 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 Setting the Boot Controller Creating an ArrayCreating 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 Installing Adaptec Storage Manager About the Hrconf Command Line UtilityAbout Adaptec Storage Manager About the ARC Utility About the AFUWhich Utility Should I Use? Understanding Adaptec Storage Manager Features OverviewChanging How Drives are Displayed Physical Devices ViewLogical Devices View Collapsed and Expanded Views Component Views Solving Problems Troubleshooting Checklist Recovering from a Disk Drive FailureFailed 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 Managing Bootable Arrays and Devices Configuring Disk DrivesAdding/Deleting Hotspares Using SATASelect Atapi SupportSATASelect Options SmartFormatting and Verifying Disk Drives Using the AFU for DOS Introduction System RequirementsCompatibility 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 Environmental Specifications DC Power RequirementsCurrent 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