NEC Express5800/120Rh-2 N8100-1126F - Manual (Page 285)

Upgrading Your Server 9-11
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: Onboard RAID controller (HostRAID) supports RAID levels
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-
rebuild is in progress.
– 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.)