| 摘要 |
PROBLEM TO BE SOLVED: To efficiently use a volume, and to make it unnecessary to manage the volume at a host side or to coordinate the use of the volume among plural hosts in a storage device sub-system having a volume copying function. SOLUTION: At the time of receiving an instruction to prepare copy from the host, a volume for storing the copy can be selected. Also, the volumes to be used for the copy is announced to the host, and the host side is allowed to select the volume. |
