Troubleshooting RAID operation err
ors
RAID restore
The CELVIN NAS supports exclusive RAID restore technology to restore a RAID drive
damaged due to accidental separation or removal of hard disks from the system. Via
RAID restore, you can restore an inactive RAID 1, RAID 5 or RAID 6 drive to degraded
mode or an inactive RAID 0 and JBOD configuration to normal mode.
Drive RAID restore support
Maximum number of hard
disks that can be remov ed
Individual No
-
JBOD
Yes
One or more
RAID 0 Yes
One or more
RAID 1 Yes
One or two
RAID 5 Yes Two or more
RAID 6 Yes Three or more
RAID 10 No
-
If the drive statu
s is not active, you can install the same hard disks in the same slots of the N AS again.
► Choose Storage M
anager - RAID Administration - Restore.
► Wait about 60 seconds until the process is completed.
After the resto
re is completed, you can access your data again.
After the RAID
1, RAID 5 or RAID 6 drive has been restored from inactive to degraded
mode (via RAID
restore) you can read an d write data on the drive as normal.
The drive sta
tus is restored to normal state after the synchronisation.
If the d isc o n
nected hard disk is damaged, RAID restore will not work.
CELVIN RAID
5
CELVIN RAID
6
Degenerate
d mode
N-1
N-1 & N-2
Write-protected (for imm ediate
data backup and & HDD
replacement)
N-1, bad blocks in the existing
hard disks of the netwo rk.
N-2, bad blocks in the existing
hard disks of the network.
RAID restore
(RAID Status: Not active)
If all or
iginal hard disks have
been ins
talledontheNAS
again an
d started up, identified
and acc
essible, and if the HDD
super b
lock is not damaged.
If all or
iginal hard disks have
been ins
talled on the NAS
again an
d started up, identified
and acc
essible, and if the HDD
super b
lock is not damaged.
RAID c
rash
N-2failedHDDandall
remaining HDDs cannot be
started up and identified and
are not accessible.
N-3 an
d all remaining
HDDs c
annot be started
up an
d identified and are not
acce
ssible.
N = number of hard disks in the n e twork
Fujitsu 81
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