| 摘要 |
PROBLEM TO BE SOLVED: To improve performance by shortening an access time to a storage part whose speed is relatively slow in a storage including a plurality of storage parts with different access speeds.SOLUTION: A storage device includes: a first storage device including a first storage part capable of writing and reading information; and a second storage device including a second storage part capable of writing and reading information data. The speed of the first storage part is set to be higher than or equivalent with that of the second storage part, and the first storage part and the second storage device respectively have a storage area with a predetermined capacity for storing at least a part of management information necessary for the control and management of the second storage part. The storage device includes an access control part for, when the corresponding management information of the second storage part is stored in the first storage part in the case of performing access to the second storage part in response to an access request, performing access to the second storage part by referring to the corresponding management information of the second storage part stored in the first storage part. |
