Drive Maintenance
If a physical drive being rebuilt contains logical drives defined
as RAID level 1 or 5 and a logical drive at RAID level 0, the
RAID level 0 drive is blocked to external access during the
rebuild.
– If you initiated the rebuild through the Administration and
Monitoring program, you must unblock the RAID level 0
drive when the rebuild is complete.
– If you initiated the rebuild through the ServeRAID
configuration program and the rebuild was interrupted,
drives with RAID Level 0 can be automatically unblocked
when you restart the server.
Only one rebuild operation can take place at a time.
The drive being rebuilt must be the same size or larger than the
failed drive.
If multiple hot-spare drives are available, the adapter searches
all bays on each channel for a hot-spare drive of the appropriate
size; the first one found enters the Rebuild state.
Under the following circumstances, a Rebuild operation can be
completed quickly:
– The defunct (DDD) drive was not defective.
– The drive is in the same bay.
– No write operations or configuration changes that require
rebuilding data in the drive have occurred since the hard
disk drive entered the DDD state.
If you are using one of the Administration and Monitoring
programs provided with your disk-array model, you can use it to
identify the defunct drive and designate a drive to replace the
defunct drive without restarting the server. Refer to the README
file on the Device Driver/Administration and Monitoring diskette
for instructions on your operating system.
116 PC Server 520 User's Handbook for PCI/EISA
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