| 摘要 |
PROBLEM TO BE SOLVED: To prevent data recovery from being prolonged.SOLUTION: An operation unit 1a receives a request for updating a first data group 4a during recovery with first history information 6a, and generates second history information 6b indicating update history. The operation unit 1a estimates the time to be required for completing the recovery with the second history information 6b, on the basis of the amount of second history information 6b. The operation unit 1a compares the estimated time with a threshold, and regulates at least a part of updating the first data group 4a during the recovery with the second history information 6b, on the basis of a result of comparison. |
