Panasonic WJ-HD716K ユーザーズマニュアル

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Images from cameras will be recorded on the HDD unit(s) in the recorder.
This recorder manages the hard disk drives by dividing them virtually into the following recording areas. 
 •  Normal recording area:

Recording area used when an event does not occur (Manual recording, schedule recording)

 •  Event recording area:

Recording area used when an event occurs (Post-event recording, emergency recording).

 •  Pre-event recording area:

Recording area used to record images before an event occurs

It is possible to assign only one recording area to a hard disk drive. 
The settings of each recording area can be configured on the disk configuration page. (+ Page 127)
Remaining capacities of each recording area can be checked on the disk configuration page or the "Maintenance" page - the 
"Disk information" tab. (+ Page 119)

The RAID 5/RAID 6 mode becomes available when optional RAID boards (WJ-HDB601) are installed in the recorder and exten-
sion units.
When the RAID5/RAID mode is applied, 3 or more hard disk drives are regarded logically as a single drive. Even if a trouble 
occurs in one of the hard disk drives, the data on the faulty HDD can be recovered based on the error correction data automati-
cally recorded on the other drives. 
The RAID 5 mode has an error correction data that recovers data when a single hard disk drive becomes faulty. The RAID 6 
mode has two error correction data that recovers data from other disk drives when two drives become faulty at the same time.
 •  Logical disk capacity in the RAID 5 mode
    Logical disk capacity = Capacity of the smallest hard disk drive among the unit x (Total number of the hard disk drives in the 

recorder 1)

 •  Logical disk capacity in the RAID 6 mode
    Logical disk capacity = Capacity of the smallest hard disk drive among the unit x (Total number of the hard disk drives in the 

recorder 2)

  *  Depending on the models of hard disk drives installed in the recorder, the capacity may be a few percent smaller. 

 •  To enable the RAID 5 mode, it is necessary to install 3 or more hard disk drives in the recorder. To enable the RAID 6 mode, it

is necessary to install 4 or more hard disk drives in the recorder. 

 •  When an optional RAID board (WJ-HDB601) is not installed in the recorder, it is impossible to enable the RAID 5/RAID 6

mode using the recorder alone.

 •  The RAID 5/RAID 6 mode is determined using the [RAID] switch behind the front cover of the recorder. (+ Page 20)
 •  Refer to the operating instructions of extension units for further information about how to determine the RAID 5/RAID 6

mode. 

The RAID 5/RAID 6 mode is determined using the [RAID] switch (+ page 20) behind the front cover of the recorder. 
Refer to page 54 for how to determine the operation mode.