Panasonic WJND400 - NETWORK DISK RECORDER Operating manual

WJ-ND400 RAID recover guide Maintenance guide
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Panasonic ND400_RAID_RecoverGuide_A
1. Outline
This guide describes how to replace and recover the HDDs when one or two HDDs in the main unit or the extension unit failed during the
operation in the RAID5/6 mode in the WJ-ND400 series (hereinafter expressed as ND400 series).
When an HDD error occurs, the HDD Access Indicator of the main unit or extension unit corresponding to the failed HDD lights red and the
Error output terminal is activated.
In the RAID5/6 mode, one (RAID5) or two (RAID6) HDDs failure can be recovered by reading the data from the remaining HDDs.
Replace the faulty HDDs and recover the data through the procedure given in this guide.
Important
• When two (RAID5) / three (RAID6) HDDs are faulty, the "HDD access indicator" which the fault was detected last will brink red. The
data cannot be recovered when two (RAID5) / three (RAID6) or more HDDs failed at a time.
2. Identifying the faulty HDD
The faulty HDD can be identied by the following ways
(1) "HDD access indicators" that illuminate red (or blink red).
(2) Front panel LCD
(3) Error Log in the browser GUI
"MAIN-d SWAP WARNING" or "EXTu-d SWAP WARNING"
Note: u:Unit number, d: Disk number
3. Replacing the HDD
Replace the faulty HDD by referring to the "WJ-ND400 HDD instal-
lation guide".
4. Recovering Data on the New HDD
(1) RAID recover (recovering data on the newly installed HDDs)
is automatically started when the HDDs are replaced. During
the data recovery, the "HDD access indicator" lights orange
and red alternately.
(2) When the data recovery is completed, the "HDD access indica-
tors" will blink green and the new HDDs start operation.
Notes:
• The data can no longer be recovered if another HDD failed during the data recovery.
• It takes at least 2.5 hours to recover the data when the HDD capacity is 500 GB.
• The recorder can be operated during the data recovery, however further longer recovery time will be required.
HDD access indicator
HDD access indicatorHDD status indicator
MAIN-d ERR
HDD SWAP ERR
EXTu-d ERR
HDD SWAP ERR

WJ-ND400 RAID recover guide Maintenance guide
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Panasonic ND400_RAID_RecoverGuide_A
Notes:
• When an HDD error occurs, error message is displayed on the LCD on the front panel.
• When an HDD error occurs, error log is displayed on the browser GUI.
• Error message and Error log list for RAID is shown below.
RAID5 1DOWN Recorder: MAIN RAID5
1DOWN
Recorder: MAIN ERR
RAID5 1down
HDD error output
Extension
unit:
EXTu RAID5
1DOWN
Extension
unit:
EXTu ERR
RAID5 1down
RAID5 2DOWN Recorder: MAIN RAID5
2DOWN
Recorder: MAIN ERR
RAID5 2down
HDD error output
Extension
unit:
EXTu RAID5
2DOWN
Extension
unit:
EXTu ERR
RAID5 2down
RAID6 1DOWN Recorder: MAIN RAID6
1DOWN
Recorder: MAIN ERR
RAID6 1down
HDD error output
Extension
unit:
EXTu RAID6
1DOWN
Extension
unit:
EXTu ERR
RAID6 1down
RAID6 2DOWN Recorder: MAIN RAID6
2DOWN
Recorder: MAIN ERR
RAID6 2down
HDD error output
Extension
unit:
EXTu RAID6
2DOWN
Extension
unit:
EXTu ERR
RAID6 2down
RAID6 3DOWN Recorder: MAIN RAID6
3DOWN
Recorder: MAIN ERR
RAID6 3down
HDD error output
Extension
unit:
EXTu RAID6
3DOWN
Extension
unit:
EXTu ERR
RAID6 3down
Description of error Error log LCD Output from
connector
Recorder: MAIN RAID6
2DOWN