Computer system management method, management server, computer system, and program

TL;DR: In this paper, the authors proposed a method of controlling switching of computers according to a cause of failure without preparing one standby node for each active node, where the standby nodes are assigned in advance with priority levels to be failover targets.

Abstract: This invention provides a method of controlling switching of computers according to a cause of failure without preparing one standby node for each active node. For n active nodes ( 200 ), m standby nodes ( 300 ) of different characteristics (in terms of CPU performance, I/O performance, communication performance, and the like) are prepared. The m standby nodes ( 300 ) are assigned in advance with priority levels to be failover targets for each cause of failure. When a failure occurs in one active node ( 200 ), a standby node that can remove the cause of the failure is chosen out of the m standby nodes ( 300 ) to take over data processing.