Panasonic WJ-ND400K Operating Instructions - Page 86

HDD Fault Tolerance System, Encryptin, Data Recorded on the HDDs, are from RSA Security Inc.

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HDD Fault Tolerance System RAID 6 A 1 B 1 C 1 P 1 Q 1 A 2 B 2 P 2 Q 2 C 2 A 3 P 3 Q 3 B 3 C 3 P 4 Q 4 A 4 B 4 C 4 The RAID function makes it possible to improve the HDD's tolerance to errors. This product is equipped with the RAID6 mode that can recover image data when two HDDs fail, in addition to the RAID5 mode that can recover image data (RAID6 has two sets of error correcting code data). This prevents loss of recorded image data on large volume HDDs (refer to the Setup Instructions (PDF file). Note: • To use the RAID5 mode you need to connect 3 or more HDDs, the RAID6 mode requires 4 or more HDDs. • Theoretical volume when RAID5 mode enabled Theoretical volume = HDD with smallest capacity in the unit x (number of HDDs in the unit −1) • Theoretical volume when RAID6 mode enabled Theoretical volume = HDD with smallest capacity in the unit x (number of HDDs in the unit −2) • The capacity of the HDDs that are installed may be a few percents smaller. Encrypting Data Recorded on the HDDs The image and audio data recorded on the HDDs is encrypted. The image and audio data on the HDDs cannot be played except on the recorder. The recorder uses RSA® BSAFE™ software from RSA Security Inc. Outline of Functions 17

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Outline of Functions
17
The RAID function makes it possi
b
le to improve the HDD
'
s tolerance
to errors.
This product is e
q
uipped
w
ith the RAID6 mode that can recover
image data
w
hen t
w
o HDDs fail, in addition to the RAID5 mode that
can recover image data (RAID6 has t
w
o sets of error correcting
code data). This prevents loss of recorded image data on large
volume HDDs (refer to the Setup Instructions (PDF file).
Note:
To use the RAID5 mode you need to connect 3 or more HDDs,
the RAID6 mode re
q
uires 4 or more HDDs.
Theoretical volume
w
hen RAID5 mode ena
b
led
Theoretical volume = HDD
w
ith smallest capacity in the unit x
(num
b
er of HDDs in the unit
1)
Theoretical volume
w
hen RAID6 mode ena
b
led
Theoretical volume = HDD
w
ith smallest capacity in the unit x
(num
b
er of HDDs in the unit
2)
The capacity of the HDDs that are installed may
b
e a fe
w
percents smaller.
The image and audio data recorded on the HDDs is encrypted. The
image and audio data on the HDDs cannot
b
e played except on the
recorder.
The recorder uses RSA
®
BSAFE
soft
w
are from RSA Security Inc.
HDD Fault Tolerance System
Encryptin
g
Data Recorded on the HDDs
C 4
C 3
C 2
Q 1
B 4
B 3
Q 2
P 1
A 4
Q 3
P 2
C 1
Q 4
P 3
B 2
B 1
P 4
A 3
A 2
A 1
RAID 6