| 摘要 |
PROBLEM TO BE SOLVED: To add a standby computer at a state in which it is synchronized with an active computer without stopping the processing of the active computer. SOLUTION: In a computer system that includes an active computer for performing service processing and a standby computer for storing replica of data stored in the active computer, when the data stored in the active computer is updated, the updated content is reflected on the replica of the data stored in the standby computer, when a computer is newly added to the computer system as the standby computer, the standby computer is selected from the computer system, the replica of the data stored in the selected standby computer is transferred to the added computer, and update information on data updated in the active computer after the transferring the replica of the data is started, transferred to the added computer. COPYRIGHT: (C)2009,JPO&INPIT
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