DEVICE AND METHOD FOR RECORDING DATA AND DEVICE AND METHOD FOR CONTROLLING DISK ARRAY

摘要

A disk recorder 2 has a RAID controller for dividing one frame of source video data into a plurality of subblocks and generating parity data corresponding to the plurality of subblocks, and a CPU block for controlling RAID processing for generating the plurality of subblocks from one frame in the RAID controller. The CPU block generates a block map for theoretically formatting recording positions of the respective subblocks so that recording processing in recording the respective subblocks and reproduction processing in reproducing the respective subblocks are carried out constantly within a predetermined time period, and determines the number of divisions of one frame of data so that the sizes of the respective subblocks generated by the RAID controller become sizes designated by the block map, on the basis of the block map.