| 摘要 |
A write control unit executes, for example, asynchronously a process of writing data to a first volume and a process of generating a code corresponding to the written data with respect to each partial area in the first volume and registering the generated codes in a code storing unit. The replication control unit replicates data of a replication target area in the first volume to a second volume, and determines partial areas of the replication target area, in which partial areas identical data is stored, based on the codes registered in the code storing unit and allocates the same physical storage area to partial areas of the second volume, which partial areas correspond to the determined partial areas. |
