NEC Express5800/120Rh-2 N8100-1061F User Manual page 285

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 is available for the RAID1, RAID5, or RAID10 disk array configuration.
NOTE:
RAID0 and RAID1.
Auto-rebuild is carried out when you hot-swap a failed hard disk drive with a new one (replace the
disk while the server is powered). While auto-rebuild is in progress, the DISK LED flashes green
and amber alternatively to indicate it.
IMPORTANT:
When auto-rebuild fails, the DISK LED lights in amber. Remove
and install the hard disk drive again to restart auto-rebuild.
If the disk array monitoring utility is installed, it may display or act
as follows. If the DISK LED does not light in amber after auto-
rebuild, however, auto-rebuild has completed successfully.
– Displays "Rebuild was cancelled" on the screen while auto-
– Appears to stop and restart auto-rebuild.
Observe the following notes for auto-rebuild.
Do not power off the server in the period between a hard disk drive error and completion
of auto-rebuild.
When you removed a hard disk drive, wait at least 90 seconds before installing the hard
disk drive back again.
Do not replace another hard disk drive while rebuilding is in progress. (The DISK LED
flashes in green and amber alternatively while rebuilding the hard disk drive.)
Onboard RAID controller (HostRAID) supports RAID levels
rebuild is in progress.
Upgrading Your Server 9-11