Details
Panasonic 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.
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