Replacing Disk 0; Rebooting During A Resynch - LaCie 5big Storage Server Technical Brief

LaCie Professional Server
RAID Repair
Technical Brief: RAID
page 89

9.2.2. Replacing Disk 0

Replacing and repairing Disks 0 and 1 require the same series of
steps. The one difference is how the system will react to a reboot
while the System mirror is resynching.
If the 5big Storage Server restarts while Disk 1 is being replaced and
resynching, the server will have no problem finding a bootable oper-
ating system on Disk 0. However, if Disk 0 is being replaced and the
5big Storage Server restarts during the System mirror resynch, the
device will hang. In this unique case, the 5big Storage Server cannot
find a bootable operating system on the first logical drive.
If the System mirror resynch is interrupted and the 5big Storage Serv-
er hangs, unplug Disk 0 from the back of the unit. With Disk 0 briefly
disassociated from the 5big Storage Server, it can find a bootable
operating system on Disk 1.
Once the 5big Storage Server has restarted, reinsert Disk 0 and
return to Disk Management to finish resynching the System mirror
(9.2. Repairing the System Mirror and RAID 5 After a Disk Failure).

9.2.3. Rebooting During a Resynch

Restarting the 5big Storage Server while it is resynching a mirror or
a RAID 5 array will not harm data or the integrity of the volume.
The sole drawback of rebooting the device during a resynch is lost
time. An interrupted resynch does not pick up where it left off once
the 5big Storage Server has restarted. Instead, the resynch will start
again from 0%.