Data Recovery (In The Raid 5/Raid 6 Mode) - Panasonic WJ-ND400K Installation Manual

■ Data recovery (in the RAID 5/RAID 6 mode)

If a hard disk drive failure occurs in the RAID 5 or RAID 6 mode, the error display will appear as shown in the following table.
In the RAID 5 mode, it is possible to read data on the other hard disk drives and recover data even when a single hard disk drive
becomes faulty (1DOWN).
In the RAID 6 mode, it is possible to read data on the other hard disk drives and recover data even when 2 hard disk drives become
faulty (2DOWN).
When the hard disk drive becomes faulty (DOWN), replace it immediately.
Refer also to the operating instructions of the extension unit.
Contact your dealer about purchasing/replacing the hard disk drives.
Important:
• In the RAID 5 mode:
If 2 or more hard disk drives become faulty (2DOWN) or when another hard disk drive becomes faulty during the data recovery, it
is impossible to recover data.
• In the RAID 6 mode:
If 3 or more hard disk drives become faulty (3DOWN) or when another hard disk drive becomes faulty during the data recovery, it
is impossible to recover data.
Source
Recorder/Extension unit
On LCD
HDD access indicator
Recorder
Error Log
Refer to the operating
instructions (PDF) for fur-
ther information.
54
Display/indication during hard disk drive error
• R AID 1DOWN:
A single hard disk drive is faulty.
• R AID 2DOWN:
2 hard disk drives are faulty.
• R AID 3DOWN (only in the RAID 6 mode):
3 hard disk drives are faulty.
Lights red:
The respective hard disk drive is faulty (which can be recov-
ered by replacing the hard disk drive)
• I n the RAID 5 mode, it indicates that the respective hard
disk drive is the first faulty drive.
• I n the RAID 6 mode, it indicates that the respective hard
disk drives are the first and second faulty drive.
Blinks red:
The respective hard disk drive is faulty (which cannot be
recovered even by replacing the hard disk drive).
• I n the RAID 5 mode, it indicates that the respective hard
disk drive is the second faulty drive.
• I n the RAID 6 mode, it indicates that the respective hard
disk drive is the third faulty drive.
• R AID 1DOWN
Recorder: MAIN RAIDm 1 DOWN
Extension unit: EXTu RAIDm 1 DOWN
• R AID 2DOWN
Recorder: MAIN RAIDm 2 DOWN
Extension unit: EXTu RAIDm 2 DOWN
• R AID 3DOWN
Recorder: MAIN RAID6 3 DOWN
Extension unit: EXTu RAID6 3 DOWN
m: Operational mode
u: Unit number
Display/indication during data
recovery
During preparation of data recovery:
[RCV START WAIT]
During process of data recovery
(writing data):
[RECOVERING XX%]
(Indicates only on extension unit)
Lights red and orange alternately:
The respective hard disk drive in the RAID
5/RAID 6 mode is being recovered.
RAID recovery failure:
• R ecorder:
MAIN RAIDm RECOVERY FAILURE
• E xtension unit:
EXTu RAIDm RECOVERY FAILURE
m: Operational mode
u: Unit number