| 摘要 |
PROBLEM TO BE SOLVED: To update data in a short time while guaranteeing completeness of the data without concentrating processing loads on an operation system computer even when there are a plurality of data update requests.SOLUTION: An operation system server includes: a storage control unit 12 for successively updating data in a storage unit 13 when a plurality of update request signals are received from a terminal 3; and an update request unit 14 for transmitting the plurality of update request signals to a standby system server 20 in the order of update, and transmitting update information (first update information) to the standby system server 20. The standby system server 20 includes: a storage control unit 22 for updating the data in a storage unit 23 in the order of reception when the plurality of update request signals are successively received, and storing update information (second update information) in the storage unit 23; and a determination unit 24 for comparing the update information (first update information) and the update information (second update information), and determining whether or not data update of the storage unit 23 has been completed. |
