NEC Express5800 140Rd-4 User Manual page 256

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When the hard disk drives are in the disk array configuration, you can restore the state before an error using the auto-rebuild
feature that stores the data in the old hard disk drive into a new one.
The auto-rebuild feature may be enabled or disabled depending on the RAID level.
Auto -rebuild is automatically carried out when you hot-swap a failed hard disk drive with a new one (replace the disk while the
se rver is powered). While auto-rebuild is in progress, the DISK lamp flashes green and amber alternatively to indicate it.
IMPORTANT:
hard disk drive again to restart auto-rebuild. (If the disk array monitoring utility is installed, check
the indication of the utility.)
Observe the following notes for auto-rebuild.
Do not p ower off the server in the period between a hard disk drive error and completion of auto-rebuild.
When yo u removed a hard disk drive, wait at least 90 seconds before installing the hard disk drive back again.
Do not re place another hard disk drive while
alternatively while rebuilding the hard disk drive.)
DISK lamps
When auto-rebuild fails, the DISK lamp lights in amber. Remove and ins
rebuilding is in progress. (The DISK lamp flashes in green and amber
tall the