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.

主权项

1. A storage management system comprising:
a management unit managing a storage system including a first storage medium including physical sectors of a first size and an alternative storage medium including physical sectors of a second size smaller than the first size; an acceptance unit accepting a write request from a host capable of accessing the storage system, the write request requesting the storage system to make writing in units of the second size; and a disk processing control unit
writing data identified by the write request on the alternative storage medium when a write area identified by the write request is an area on the first storage medium and a start address or an end address in the write area does not correspond to a boundary of a physical sector of the first storage medium,notifying the host of completion of the writing, andtransferring the data from the alternative storage medium to the first storage medium after the notification.