Replicates files from multiple servers across multiple sites. Only the portion of the files that have changed is actually replicated so after the first synchronisation, the amount of WAN traffic is substantially reduced.DFS Replication supports the use of volumes on which data deduplication is running, thereby keeping storage space to a minimum. In addition, DFS will route DirectAccess requests for files to the closest DFS location to the user to reduce latency and network bandwidth.