| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonvolatile semiconductor memory drive achieving data management for further improving data redundancy. <P>SOLUTION: In an SSD 12, a plurality of groups are constructed by grouping n NAND memory blocks, which are operable independently, as one set on NAND memories 204A-204H. A RAID management part 2031 in a control part 203 performs data writing to generate parity data as an n-th data item every time when n-1 data items are written. A logical/physical address management part 2032 stores a logical address in a redundant area of a page in data writing. The RAID management part 2031 carries out processing to generate parity data for the logical address in the redundant area and to write the parity data in the redundant area of the page for writing the n-th data item. <P>COPYRIGHT: (C)2010,JPO&INPIT |
