9-10 Upgrading Your Server
DISK LEDs
When the hard disk drives are in the RAID System 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 server is powered). While auto-rebuild is in progress, the DISK Access
LED or DISK Error LED flashes 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.
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 60 seconds before installing the hard
disk drive back again.
Do not replace another hard disk drive while rebuilding is in progress. (The DISK Access
LED or DISK Error LED flashes alternatively while rebuilding the hard disk drive.)
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