| 摘要 |
<p>PROBLEM TO BE SOLVED: To reserve backup data in which updated data in system distribution is constantly reflected, and also to secure data saving when a failure occurs. SOLUTION: A backup system is provided with a main system server 51 distributing a system to clients in the normal operation, the first storage means 52 storing a database A used for system distribution by the main server 51, a communication file 55 temporarily storing updated data in updating the database A stored in the first storage means 52, a subsystem server 53 distributing the system to clients in an abnormal operation in the main server 51, and the second storage means 54 used for the system distribution by the subsystem server 53, storing a database A' on which the updated data in the communication file 55 is sequentially reflected.</p> |
