The DFS Replication bandwidth savings are computed by determining the total size of data replicated across the network using ...

The DFS Replication bandwidth savings are computed by determining the total size of data replicated across the network using a combination of remote differential compression (RDC), which sends only byte-level changes, and stream compression. By comparing this figure to the amount of data that would be replicated across the network if RDC and stream compression were not used, you can determine the percentage of bandwidth saved.