Panasonic WJND400 - NETWORK DISK RECORDER Operating manual

WJ-ND400 RAID recover guide Maintenance guide

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

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

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