A Rebuild Completes With Errors
A rebuild completes with errors when a portion of the disk containing redundant (parity) information is damaged. The rebuild process can restore data from the healthy portions of the disk but not from the damaged portion.
When a rebuild is able to restore all data except data from damaged portions of the disk, it indicates successful completion while also generating alert 2163. For information on alert messages, see the Server Administrator Messages Reference Guide.
The rebuild may also report sense key errors. In this situation, take the following actions to restore the maximum data possible:
Back up the degraded virtual disk onto a fresh (unused) tape drive.
- If the backup is successful — If the backup completes successfully, then the user data on the virtual disk has not been damaged. In this case, you can continue with step 2.
- If the backup encounters errors — If the backup encounters errors then the user data has been damaged and cannot be recovered from the virtual disk. In this case, the only possibility for recovery is to restore from a previous backup of the virtual disk.
Perform a Check Consistency on the virtual disk that you have backed up onto a tape drive.
Restore the virtual disk from the tape drive onto healthy physical disks.