Upgrading Your Server 9-13When the hard disk drives are in the disk array configuration, you can restore the state before anerror 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 supports RAID levels RAID0 andRAID1.Auto-rebuild is carried out when you hot-swap a failed hard disk drive with a new one (replace thedisk while the server is powered). While auto-rebuild is in progress, the DISK LED flashes greenand amber alternatively to indicate it.IMPORTANT: When auto-rebuild fails, the DISK LED lights in amber. Removeand install the hard disk drive again to restart auto-rebuild. If the disk array monitoring utility is installed, it may display or actas follows. If the DISK LED does not light in amber afterauto-rebuild, however, auto-rebuild has completed successfully.– Displays "Rebuild was cancelled" on the screen whileauto-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 completionof auto-rebuild. When you removed a hard disk drive, wait at least 90 seconds before installing the harddisk drive back again. Do not replace another hard disk drive while rebuilding is in progress. (The DISK LEDflashes in green and amber alternatively while rebuilding the hard disk drive.)
