Notes On Replacing Hard Disk Drives In The Raid System - NEC Express 5800 User Manual

Hardware
Notes on Replacing Hard Disk Drives in the RAID
System
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 is available for the RAID1, RAID5, RAID6, RAID10, or RAID50.
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 (green) and DISK error LED (amber) flashes alternatively to indicate it.
IMPORTANT:
When the auto-rebuild fails, the DISK LED lights in amber. Remove and install the hard disk drive
again to restart the 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.)
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