User manual

53
number of hard drives is unplugged from the NAS accidentally, you can plug in the same
hard drives into the same drive slots and click "Recover" to recover the volume status
from "Not active" to "Degraded mode".
If the disk volume is configured as RAID 0 or JBOD and one or more of the hard drive
members are disconnected or unplugged, you can plug in the same hard drives into the
same drive slots and use this function to recover the volume status from "Not active" to
"Normal". The disk volume can be used normally after successful recovery.
Disk volum e
Supports RAID
recovery
Maxim um num ber of disk removal
allowed
Single
No
-
JBOD
Yes
1 or more
RAID 0
Yes
1 or more
RAID 1
Yes
1 or 2
RAID 5
Yes
2 or more
RAID 6
Yes
3 or more
RAID 10
No
-
Note:
After recovering a RAID 1, RAID 5 or RAID 6 disk volume from not active to
degraded mode by the RAID recovery, you can read or write the volume normally.
The volume status will be recovered to normal after synchronization.
If the disconnected drive member is damaged, the RAID recovery function will not
work.
Standard
RAID 5
QNAP RAID 5
Standard
RAID 6
QNAP RAID 6
Degraded
mode
N-1
N-1
N-1 & N-2
N-1 & N-2