Patent ID: 8140794

Claim:
A method for replacing data in a primary volume with data in a recovery volume, the method comprising: updating a memory to indicate that the primary volume is no longer identified by a first logical unit number, wherein the primary volume is stored at a first device identified by the first logical unit number; updating the memory to indicate that the recovery volume is no longer identified by a second logical unit number, wherein the recovery volume is stored at a second device identified by the second logical unit number; and after updating the memory to indicate that the primary volume is no longer identified by a first logical unit number and the recovery volume is no longer identified by the second logical unit number, updating the memory to indicate that the recovery volume is identified by the first logical unit number, wherein the recovery volume is now usable as the primary volume, wherein the recovery volume comprises multiple snapshots of the primary volume, and wherein the recovery volume includes information about one or more applications that created data stored in the primary volume.