Using swsrprevsync (Synchronization reverse command) the physical copy amount can be greatly reduced and the AdvancedCopy time shortened for restore when there is a small amount of differential data.
Additionally, it is also possible to execute restore without cancelling other copy jobs in operations that match multiple copy jobs. Therefore, there is no need for overall copy after restore, so operations can be restarted with the load on ETERNUS Disk storage system kept to a minimum.
Figure 7.46 Example of EC reversal operation
