User's Manual

288 Troubleshooting
• The virtual disk includes failed or corrupt physical disks —This
situation may generate alert 2083. For information on Alert Messages, see
the
Dell OpenManage Server Administrator Messages Reference Guide at
support.dell.com/manuals .
•
The rebuild rate setting is too low —If the rebuild rate setting is quite low
and the system is processing a number of operations, then the rebuild may
take an unusual amount of time to complete. For more information, see
Set Rebuild Rate.
•
The rebuild was cancelled —Another user can cancel a rebuild that you
have initiated.
A Rebuild Completes with Errors
This section applies to PERC 4/SC, 4/DC, 4e/DC, 4/Di, 4e/Si, and 4e/Di controllers
In some situations, a rebuild may complete successfully while also reporting
errors. This may occur 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 Dell OpenManage Server
Administrator Messages Reference Guide at support.dell.com/manuals.
The rebuild may also report sense key errors. In this situation, take the
following actions to restore the maximum data possible:
1
Back up the degraded virtual disk onto a fresh (unused) tape.
- 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.
2
Perform a Check Consistency on the virtual disk that you have backed up
onto tape.