Data storage device, memory management method and program for updating data recorded in each of a plurality of physically partitioned memory areas

摘要

A data storage device comprises a memory that includes a plurality of physically partitioned memory areas with a rewrite buffer area to be used for data rewrite set within each of the partitioned memory areas and a memory management unit that updates data recorded in each partitioned memory area by utilizing the corresponding rewrite buffer area is set within the partitioned memory area.