Failed Disk Drive Not Protected By A Hot Spare; Failure In Multiple Logical Drives Simultaneously; Disk Drive Failure In A Raid 0 Logical Drive - Adaptec 5405 User Manual

Note:
A hot spare icon changes from light-blue to dark-blue when it becomes part of a logical drive.
To recover from the failure:
1
Remove and replace the failed disk drive (following manufacturer's instructions).
2
If copyback is not enabled—Remove the 'hot spare' designation from the original hot spare
(the disk drive that was built into the logical drive). See
designate a new hot spare to protect the logical drives on that controller.
If copyback is enabled—Data is automatically moved back to its original location once the
controller detects that the failed drive has been replaced. No action is required. See
Enabling Copyback on page 57

Failed Disk Drive Not Protected by a Hot Spare

When a logical drive is not protected by a hot spare, if a disk drive in that logical drive fails,
remove and replace the failed disk drive. The controller detects the new disk drive and begins
to rebuild the logical drive. You can access the logical drive while it's rebuilding.
For instance, when one of the disk drives fails in the RAID 1 logical drive shown in the next
example, the logical drive is not automatically rebuilt. The failed disk drive must be removed
and replaced before the logical drive can be rebuilt.
If the controller fails to rebuild the logical drive, check that the cables, disk drives, and
controllers are properly installed and connected. Then, if necessary, follow the instructions in
Rebuilding Logical Drives on page

Failure in Multiple Logical Drives Simultaneously

If there's a disk drive failure in more than one logical drive at the same time (one failure per
logical drive), and the logical drives have hot spares protecting them, the controller rebuilds the
logical drives with these limitations:
A hot spare must be of equal or greater size than the failed disk drive it's replacing.
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Failed disk drives are replaced with hot spares in the order in which they failed. (The
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logical drive that includes the disk drive that failed first is rebuilt first, assuming an
appropriate hot spare is available—see the previous bullet.)
If there are more disk drive failures than hot spares, see
Spare on page 138.
If copyback is enabled, data is moved back to its original location once the controller detects
that the failed drive has been replaced. See

Disk Drive Failure in a RAID 0 Logical Drive

Because RAID 0 volumes do not include redundancy, if a disk drive fails in a RAID 0 logical
drive, the data can't be recovered.
Chapter 11: Solving Problems
for more information.
140.
Failed Disk Drive Not Protected by a Hot
Enabling Copyback on page 57
page 56 for instructions. Then,
for more information.
138
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