Panasonic WJ-NDB301 User Manual
RAID Board
Instructions
Model No. WJ-NDB301
Before attempting to connect or operate this product, please read these instructions carefully and save this manual for future use.
THIS PUBLICATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, OR
NON-INFRINGEMENT OF THE THIRD PARTY’S RIGHT.
THIS PUBLICATION COULD INCLUDE TECHNICAL INACCURACIES OR TYPOGRAPHICAL ERRORS. CHANGES ARE
ADDED TO THE INFORMATION HEREIN, AT ANY TIME, FOR THE IMPROVEMENTS OF THIS PUBLICATION AND/OR THE
CORRESPONDING PRODUCT (S).
LIMITATION OF LIABILITY
IN NO EVENT SHALL MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. BE LIABLE TO ANY PARTY OR ANY PERSON,
EXCEPT FOR REPLACEMENT OR REASONABLE MAINTENANCE OF THE PRODUCT, FOR THE CASES, INCLUDING BUT
NOT LIMITED TO BELOW:
(1) ANY DAMAGE AND LOSS, INCLUDING WITHOUT LIMITATION, DIRECT OR INDIRECT, SPECIAL, CONSEQUENTIAL OR
EXEMPLARY, ARISING OUT OF OR RELATING TO THE PRODUCT;
(2) PERSONAL INJURY OR ANY DAMAGE CAUSED BY INAPPROPRIATE USE OR NEGLIGENT OPERATION OF THE USER;
(3) UNAUTHORIZED DISASSEMBLE, REPAIR OR MODIFICATION OF THE PRODUCT BY THE USER;
(4) ANY PROBLEM, CONSEQUENTIAL INCONVENIENCE, OR LOSS OR DAMAGE, ARISING OUT OF THE SYSTEM COM-
BINED BY THE DEVICES OF THIRD PARTY.
DISCLAIMER OF WARRANTY
Warning: All work related to the installation of this product should be qualified service personnel or system installer.
2
Unplug the power cord from the WJ-ND300 before
installing the board.
This board is exclusively designed for the WJ-ND300
(sold separately).
Do not install this board in other devices or use this board
independently.
Keep unused board in an antistatic bag.
The board is shipped in an antistatic bag. Discharge static
electricity from your body by touching a metal object such
as a metal locker before opening the bag to protect the
board from static electricity.
Do not touch the parts (circuits) on the board.
The parts (circuits) on the board are vulnerable to static
electricity.
Do not touch the parts on the board directly to prevent the
board from damage caused by static electricity.
Discharge static electricity before touching the board.
Before touching the board, discharge static electricity from
your body by touching a metal object such as a metal locker. When handling the board, hold only the back end part
(connector side) even after discharging static electricity.
Fix the board with the screws firmly.
Make sure that the board is firmly fixed in Network Disk
Recorder by tightening the fixing screws.
If the board is not fixed firmly, it may damage both the
board and the Network Disk Recorder.
Handle with care.
Do not strike or shake the board, as this may cause damage.
Contact a dealer when having a problem.
Turn off the power of the Network Disk Recorder immediately and unplug the power plug from the AC outlet, and
then contact qualified service personnel.
PRECAUTIONS
FEATURES
The RAID Board WJ-NDB301 is an option for installation
into the Network Disk Recorder WJ-ND300. The RAID
board enables the network disk recorder to use the RAID 5
function that can recover data even though one of the hard
disk drives is failed.
RAID level 5 regards 3 or more drives as one drive, and it
is possible to read data by attaching error correction data
even though one of the drives is broken automatically. (It is
impossible to recover data if two drives are simultaneously
damaged or the second drive data fails during the data
recovery process.)
When using the RAID function, the logical disk size of the
extension unit will be as below.
Logical disk size = Smallest size of the disk among the
disks in the extension unit x (Number of the disks in the
extension unit – 1)
Note: Depending on the model of a hard disk drive, the logical disk size may be a few percent smaller than the size
resulting from the formula above.
Read the operating instructions included in the Network
Disk Recorder for details.
3. Connect between the main and RAID boards with 2
cables that belong to the main board.
4. Detach the cable from the cable clamp to unbind it, and
pass the cable through the cable clamp as shown in
the illustration below.
3
INSTALLATIONS
1. Unscrew WJ-ND300 (2 screws from top, 4 screws from
sides, and 5 screws from rear) and remove the top
cover.
2. Disconnect all of the HDD cables.
To main board
To RAID board
HDD cables
Hold the
cables using
the cable
clamp.
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