How does DFS Replication avoid saturating a connection?
In DFS Replication you set the maximum bandwidth you want to use on a connection, and the service maintains that level of network usage. This is different from the Background Intelligent Transfer Service (BITS), and DFS Replication does not saturate the connection if you set it appropriately. Nonetheless, the bandwidth throttling is not 100% accurate and DFS Replication can saturate the link for short periods of time. This is because DFS Replication throttles bandwidth by throttling RPC calls. Because this process relies on various buffers in lower levels of the network stack, including RPC, the replication traffic tends to travel in bursts which may at times saturate the network links.