Panasonic WJ-ND400 User Manual
Outline of Functions
17
The RAID function makes it possible to improve the HDD's tolerance
to errors.
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).
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.
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
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
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.
percents smaller.
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.
image and audio data on the HDDs cannot be played except on the
recorder.
The recorder uses RSA
®
BSAFE
™
software from RSA Security Inc.
HDD Fault Tolerance System
Encrypting 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
ND400_Basic.book 17 ページ ２００８年４月８日 火曜日 午後３時５９分