Rebuilding The Disk Array; Rebuilding The Disk Array Automatically - HP Surestore Disk Array 12h - And FC60 System Administrator Manual

Using AutoRAID Manager for Windows NT

Rebuilding the Disk Array

Rebuilding the Disk Array
To maintain data redundancy in the event of a disk failure, it is important to rebuild the disk array as soon
as possible. The disk array is not data redundant until a rebuild is performed. If another disk fails before the
rebuild is complete, data on the disk array may be lost.
AutoRAID Manager provides two rebuild options:
Auto Rebuild, which allows the disk array to begin rebuilding immediately if a disk fails.
Manual Rebuild, which requires you to initiate the rebuild. This option is provided if you want more
control over the rebuild process, such as delaying the start of a rebuild until the system is less busy.
A rebuild impacts disk array performance while it is in progress, so before starting a rebuild make sure the
appropriate Rebuild Priority is set.

Rebuilding the Disk Array Automatically

You can enable Auto Rebuild to allow the disk array to immediately begin rebuilding if a disk fails. To
perform a Rebuild the array must have enough capacity available, either in the form of an Active Hot Spare
or unallocated capacity.
Auto Rebuild with high priority is enabled by default to provide the greatest protection against disk failure;
consequently, it will typically not be necessary to perform this procedure unless you want to change the
rebuild priority.
To enable Auto Rebuild to rebuild the disk array automatically:
1. Right-click the disk array from the Detail pane.
2. Click Properties.
3. Click the Configuration tab.
4. Under Rebuild, click Automatic.
5. Select the Priority you want the disk array to use when it performs a rebuild.
The disk array will now automatically rebuild the array if a disk fails.
NOTE! If there is no Active Hot Spare or not enough unallocated capacity available, Auto Rebuild will be
enabled even though a rebuild cannot be performed if a disk fails. In this situation, you must increase the
amount of unallocated capacity so there is enough capacity to perform a rebuild. You can increase the
amount of unallocated capacity by adding another disk or deleting an existing logical drive.
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