Rebuilding a Defunct Drive
When a hard disk drive goes defunct (DDD), a Rebuild operation is required to reconstruct the data for the device
in its respective disk array. The ServeRAID adapters and controllers can reconstruct RAID level-1 and RAID level-5
logical drives, but they cannot reconstruct data stored in RAID level-0 logical drives.
To prevent data integrity problems, the ServeRAID adapters and controllers set the RAID level-0 logical drives
to Blocked during a Rebuild operation. After the Rebuild operation completes, you can unblock the RAID level-0
logical drives, and access them once again.
But remember, the logical drive might contain damaged data.
(Refer to 'Unblocking Logical Drives' for more information.)
Before you rebuild a drive, review the following guidelines and general information.
Guidelines for the Rebuild Operation
General Information about the Rebuild Operation
A physical hard disk drive can enter the rebuild state if:
When you physically replace a defunct drive in a critical logical drive, the ServeRAID adapter or controller rebuilds the data on the new physical drive before it changes the logical drive state back to Okay.
Automatically Rebuilding the Defunct Drive
The ServeRAID adapter or controller will rebuild a defunct drive automatically when all of the following
conditions exist:
NOTE: If you physically replace the drive and the new drive does not appear in the Physical Drives branch of the Main Tree, you must scan for new or removed Ready drives.
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