| 摘要 |
A plurality of storage units (70) are divided into groups with different access routes. A data movement control unit (62) reads storage data onto a first storage unit among the storage units via a first route connecting to the first storage unit, and writes the read storage data to a second storage unit among the storage units via a second route connecting to the second storage unit. A read/write control unit (63), in response to a data write command, writes data designated by the write command to a third storage unit among the storage units (70) via a third route connecting to the third storage unit. A management table control unit (65) selects the third storage unit so that the first route and the second route are different from the third route. |
