Recovering From A Disk Drive Failure; Failed Disk Drive Protected By A Hot Spare - Adaptec RAID 3085 User Manual

Recovering from a Disk Drive Failure

When a disk drive fails for any reason, it is represented in Adaptec Storage
Manager with a red X, as shown at right.
This section explains how to recover when a disk drive fails:
If the logical drive was protected by a hot spare (see the following section).
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If the logical drive was not protected by a hot spare (see
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If there is a disk drive failure in more than one logical drive simultaneously (see
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If it is a RAID 0 logical drive (see
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If multiple disk drives fail within the same logical drive (see
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Failed Disk Drive Protected by a Hot Spare

When a logical drive is protected by a hot spare, if a disk drive in that logical drive fails the hot
spare is automatically incorporated into the logical drive and takes over for the failed drive.
For instance, when a disk drive fails in the RAID 5 logical drive shown in the next example, the
logical drive is automatically rebuilt (its data is reconstructed) using the hot spare in place of
the failed drive. You can access the logical drive even if it's rebuilding.
Disk drive shows
Failed status...
Note:
In this example, the color of the hot spare changed from light-blue to dark-blue, showing that
it is now 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 90
page 137).
...hot spare takes over...
for more information.
Chapter 13: Solving Problems
page 137).
page 138).
...and logical drive is rebuilt with hot spare.
page 85 for instructions. Then,
136
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page 137).