Patent ID: 7043665

Claim:
A method for managing data, comprising: processing a mirror policy indicating volumes in a first storage system to mirror to volumes in a second storage system and volumes in the second storage system to mirror to volumes in a third storage system, wherein the third storage system is at a first geographical location remote with respect to a second geographical location including the first and second storage systems; detecting a failure of the first and second storage systems at the second geographical location; automatically reconfiguring network resources by updating files used to direct I/O requests from an application in a host system to volumes in the first storage system to volumes in the third storage system in response to detecting the failure of the first and second storage systems; detecting a failure of the first storage system and the availability of the second storage system; reconfiguring network resources to direct I/O requests to volumes in the first storage system to volumes in the second storage system in response to detecting the failure of the first storage system and the availability of the second storage system; and copying updates to the second storage system to the third storage system after reconfiguring network resources to direct I/O requests to volumes in the first storage system to volumes in the second storage system.