Importance

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Abstract

A system is provided which includes a plurality of nodes, wherein each node has a processor executable thereon. The system also includes a first failover server group that includes a first server that is capable of performing a first service and a second server capable of performing the first service. The first server is executable on a first node of the plurality of nodes and the second server is executable on a second node of the plurality of nodes. The third server is executable on the first node and the fourth server being executable on one of the plurality of nodes other than the first node. The system also includes a second failover server group that includes a third server capable of performing a second service and a fourth server capable of performing the second service. The first, second, third and fourth servers can each be in one of a plurality of states including an active state and a standby state. The system also includes a failover management system that, upon determining that a failure has occurred on the first node, instructs the second server to change its state to the active state if the first server was in the active state when the failure determination occurred, and instructs the fourth server to change its state to the active state if the third server was in the active state when the failure determination occurred.

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First Claim