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

An information processing system comprising:

• a first storage medium including physical sectors of a first size;
• an alternative storage medium including physical sectors of a second size smaller than the first size;
• and
• a storage management system including
• a management unit managing a storage system including the first storage medium and the alternative storage medium,
• 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, and
• transferring the data from the alternative storage medium to the first storage medium after the notification.

A storage management method implemented by a computer capable of accessing 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, and a host capable of accessing the storage system,

• wherein the computer:
• accepts a write request from the host, the write request requesting the storage system to make writing in units of the second size;
• and
• writes 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;
• notifies the host of completion of the writing;
• and
• transfers the data from the alternative storage medium to the first storage medium after the notification.

A program causing a computer capable of accessing 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, and a host capable of accessing the storage system to perform the steps of:

• accepting a write request from the host, the write request requesting the storage system to make writing in units of the second size;
• 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;
• and
• transferring the data from the alternative storage medium to the first storage medium after the notification.