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
Read only
protection (for
immediate data
backup & hard
drive
replacement)
N/A
N-1, bad blocks
found in the
surviving drives of
the array.
N/A
N-2, bad blocks
found in the
surviving drives of
the array.
RAID recovery
(RAID status: Not
active)
N/A
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/A
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).
RAID crash
N-2
N-2 failed hard
drive and any of
the remaining hard
drives cannot be
spun up or
identified or
accessed.
N-3
N-3 and any of the
remaining hard
drives cannot be
spun up or
identified or
accessed.
N = Number of hard disk drives in the array
Summary of Contents for Turbo NAS TVS-71 Series
Page 1: ...QNAP Turbo NAS TVS x71 Series Hardware User Manual 2014 QNAP Systems Inc All Rights Reserved...
Page 13: ...http www qnap com for details...
Page 25: ...3 Press insert the module fixing 4 Replace the cover and tighten the rear screws...
Page 35: ...3 Unplug the failed power supply 4 Plug in a new power supply to the NAS 5 Turn on the NAS...
