Data Rewind is a restore method lets you rewind files to a point in time (rewind point) before they were corrupted. Because replication continuously updates source data to the Replica server, the Replica server always holds the same data as in the Master server. In the case of data corruption, recovering the latest files from the Replica server will not help, because that data in the Replica server is also corrupted. These rewind points serve as checkpoints in the Rewind log that mark an event or operation. The actual information stored includes the operation that will undo the event if the rewind point is activated. Data recovery uses these rewind points or bookmarks in the Rewind log to reset the current data back to a previous state. Because this built-in rewind technology occurs on the Replica server, any "data rewinding" to a previous state can only be performed on the Replica server.
The advantages of a Arcserve Replication restore using the data rewind feature are very quick recovery, extreme granularity of the recoverable data, and application-aware replication and recovery.
Note: For detailed procedures about recovering lost data from a Replica server using the Data Rewind feature, see the Arcserve Replication and High Availability Administration Guide.
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