Patent ID: 7260625

Claim:
A data center system, comprising: a first data center including a first computer and a first storage system; a second data center including a second computer and a second storage system; and a third data center including a third computer and a third storage system, wherein the first storage system, the second storage system, and the third storage system are operatively connected with each other, wherein said first computer, said second computer, and said third computer each include a management table having a plurality of priority keys defining computer priority order for failover, wherein said first computer selects one of the plurality of priority keys and selects one of said second computer and said third computer as a failover computer according to the computer priority order defined by the one of the plurality of priority keys; and wherein a failover switch is performed from said first computer to said failover computer; wherein said first computer is an active computer; wherein said second storage system and said third storage system are each configured to store a copy of data from said first storage system by remote copy operation; and wherein said information is defined according to types of the remote copy operation used for said second storage system and said third storage system; wherein said second storage system is configured to store a copy of the data from said first storage system by synchronous remote copy operation; wherein said third storage system is configured to store a copy of the data from said first storage system by asynchronous remote copy operation; and wherein said second storage system has higher priority than said third storage system.