| 摘要 |
PROBLEM TO BE SOLVED: To improve accessibility of a storage device at a low cost.SOLUTION: When data write to a logical storage area 31 realized by a storage area of a storage device 21 is requested, a determination part 11 determines whether a write-in pattern is a sequential access or a random access. A control unit 12 writes write-in data in the logical storage area 31 when the write-in pattern is a sequential access. On the other hand, when the write-in pattern is a random access, the control unit 12 writes the write-in data in a virtual storage area 32 virtualized with a storage area of the storage device 22 of a faster access speed than the storage device 21. |
