Fujitsu Q802 Operating Manual page 64

Troubleshooting RAID operation errors
Degraded mode
Read only protection (for
immediate data backup & hard
drive replacement)
RAID recovery
(RAID status: Not active)
RAID crash
N = Number of hard disk drives in the array
58
CELVIN RAID 5
N-1
N-1, bad blocks found in the
surviving drives of the array.
If re-inserting all the original
hard disk drives to the NAS and
they can be spun up, identified,
accessed, and the hard drive
superblock is not damaged.
N-2 failed hard drive and any of
the remaining hard drives
cannot be spun up or identified
or accessed.
CELVIN RAID 6
N-1 & N-2
N-2, bad blocks found in the
surviving drives of the array.
If re-inserting all the original
hard disk drives to the NAS and
they can be spun up, identified,
accessed, and the hard drive
superblock is not damaged).
N-3 and any of the remaining
hard drives cannot be spun up
or identified or accessed.
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