Patent ID: 8656124
Filing Date: 2014-02-18
Classification: G06F

Abstract:
1. A method for re-establishing a backup relationship between first and second volumes in a data storage system, the method comprising: storing first information for preserving the backup relationship, in response to or in advance of receiving a request to pseudo-terminate the backup relationship, wherein the pseudo-terminate allows to reversibly terminate the backup relationship between the first and the second volumes without requiring a complete re-synchronization; recording changes to the first or second volumes that occur subsequent to pseudo-terminating the backup relationship; releasing resources associated with the backup relationship after the pseudo-terminating is completed; re-establishing the backup relationship between the first and second volumes according to the first information, storing second information associated with incremental backups of the first or second volumes; and synchronizing the first and second volumes by merging the incremental backups with the first or second volumes in addition to the merging the recorded changes with the first or second volumes.