Can an administrator turn off RDC or change the threshold?
Yes. You can turn off RDC through the property page of a given connection. Disabling RDC can reduce CPU utilization and replication latency on fast local area network (LAN) links that have no bandwidth constraints or for replication groups that consist primarily of files smaller than 64 KB. If you choose to disable RDC on a connection, test the replication efficiency before and after the change to verify that you have improved replication performance. You can change the RDC size threshold by using the Dfsradmin Connection Set command, the DFS Replication WMI Provider, or by manually editing the configuration XML file.