What does the term "Delta Sets" refer to in VPLEX?

The term "Delta Sets" in VPLEX specifically refers to a method for distributing changes in an asynchronous replication group. This mechanism allows VPLEX to capture only the changes made to the data since the last point in time, instead of replicating the entire data set. By focusing on the changes, or deltas, VPLEX can optimize network bandwidth and reduce the time taken for data synchronization between sites.

When data is modified, only the delta sets, which contain the incremental updates, are transferred to the remote site. This selective replication enhances efficiency, especially in environments where large data volumes are common, as it minimizes the amount of data that needs to be moved.

This capability is a crucial aspect of VPLEX's functionality, enabling quicker and more efficient data protection and disaster recovery strategies by ensuring that the most recent changes are consistently updated across geographically dispersed locations without the overhead of full data replication.