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IBM-AUSTRIA - PC-HW-Support 30 Aug 1999 |
Results of a Hard Disk Drive Failure (ServeRAID)
Results of a Hard Disk Drive Failure
Depending on the circumstances, a drive failure can result in several possible situations.
Scenario 1 :
- Only one hard disk drive fails.
- A hot-spare drive is defined that is
the same size or larger than the failed drive.
Note: Any logical drives with RAID level 0 are blocked
during the Rebuild process, and remain blocked until unblocked. The ServeRAID configuration
program autom. unblocks all drives at the end of the rebuild operation.
Scenario 2 :
- Only one hard disk drive fails.
- A hot-spare drive
is not defined or is smaller than the failed drive.
- The logical drives in the array
are assigned RAID levels 0, 1, 5,
or a combination of these levels.
All data in logical drives assigned RAID level 0 will be lost. In this array, the logical drives that are assigned RAID
level 1 or 5 will be in Critical (CRT) state. The logical drives assigned RAID level 0 will be in the Offline (OFL) state.
Sceanario 3 :
If more than one drive in an array fails,
all the data is lost in all of the logical drives of the array.
For this reason,
it is important that you replace and rebuild
a defunct drive as soon as possible.
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