| 摘要 |
When a volume to which a snapshot configuration is applied is migrated from a movement-source storage to a movement-destination storage, a problem of discrepancy in snapshot configuration between the movement source and the movement destination may be caused upon accepting a write from a host. According to the present invention, in order to solve the problem, during migration of a snapshot configuration, an exclusive of a chunk to be migrated is acquired, and snapshot allocate information, which is management information for the chunk to be transitioned, is transmitted to the movement-destination storage. Upon reception of a write request from an higher-level device, an exclusive of a first chunk relating to the write request and a second chunk related to the chunk relating to the write request by the snapshot configuration is acquired, and a write process relating to the write request is executed. |
