| 摘要 |
A virtual tape device includes a memory to record logical volume information that includes an identifier of a logical volume, an identifier of a physical volume that stores data of the logical volume, and information that indicates whether the data of the logical volume is cached in a cache unit, in association with each other. A determining unit that, when a copy command to copy data of the logical volume stored in a first physical volume to a second physical volume is received, determines whether a logical volume cached in the cache unit exists among the logical volumes, and a storage control unit that, when it is determined that the logical volume cached in the cache unit exists among the logical volumes, stores the data of the logical volume cached in the cache unit to the second physical volume without reference to an order indicated in the copy command. |
