| 摘要 |
PROBLEM TO BE SOLVED: To provide a storage, a storage control method and a storage control program capable of reducing a processing load due to file rearrangements.SOLUTION: A storage unit 15 has plural hierarchies. A group management part 11 manages a file, which is stored in any of the hierarchies of the storage unit 15, while dividing the same into plural groups. A shift determination part 12 selects a group, which satisfies hierarchy-shift conditions, from the plural groups as an object hierarchy-shift. A file shift part 13 shifts a file which is included in the group selected by the shift determination part 12 from the hierarchy in which the file is stored to another hierarchy.SELECTED DRAWING: Figure 1 |
