User`s guide

9-18 Upgrading Your Server
Notes on Replacing Hard Disk Drives in the RAID System
When the hard disk drives are in a RAID system, you can restore the state before an error occurs, 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, RAID6, RAID10, or RAID50.
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 on). 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 amber. Remove and install the hard disk drive
again to restart auto-rebuild.
 If the RAID System management utility is installed, it may display or act as follows.
– Displays "Rebuild was cancelled" on the screen while auto-rebuild is in progress.
– Appears to stop and restart auto-rebuild.
If the DISK LED does not light amber after auto-rebuild, however, auto-rebuild has completed
successfully.
Observe the following notes for auto-rebuild.
 Do not power off the server between the detection of a hard disk drive error and the completion of the auto-rebuild..
 When you remove 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 green and amber
alternatively when rebuilding the hard disk drive.)