Patent ID: 9710188
Date: 2017-07-18
CPC Classifications: G06F

Claim:
1. A method for re-establishing a backup relationship between a first volume and a second volume in a data storage system, the method comprising: establishing the backup relationship between the first volume and the second volume; receiving a request to reversibly terminate the backup relationship; in response to receiving the request to reversibly terminate the backup relationship, storing first information for preserving the backup relationship and reversibly terminating the backup relationship; recording each change to the first volume and to the second volume that occurs subsequent to the backup relationship being reversibly terminated; receiving a request to re-establish the backup relationship between the first volume and the second volume; re-establishing the backup relationship between the first volume and the second volume utilizing the stored first information; releasing resources associated with the backup relationship subsequent to the backup relationship being reversibly terminated; storing second information associated with incremental backups of the first volume and the second volume; and synchronizing the first and second volumes by merging the incremental backups with the first or second volumes and merging the recorded changes with the first or second volumes.