Storage management system, storage management method, storage medium and information processing system

摘要

The present invention provides a storage management system that suppresses performance degradation due to Read-Modify-Write. The storage management system includes: a management unit managing a storage system including a first storage medium having a first physical sector size and an alternative storage medium having a second physical sector size smaller than the first physical sector size; an acceptance unit accepting a write request; and a disk processing control unit, when a write area identified by the write request is an area on the first storage medium and the start address or end address of the write area does not correspond to a boundary of a physical sector of the first storage medium, writing data identified by the write request on the alternative storage medium, notifying the host of completion of the write, and then transferring the data from the alternative storage medium to the first storage medium.