Enable or disable RDC for a specific connection

Applies To: Windows Server 2003 R2

Remote differential compression (RDC) is a “diff-over-the-wire” protocol that can be used to efficiently update files over a limited-bandwidth network. RDC detects insertions, removals, re-arrangements of data in files, enabling DFS Replication to replicate only the changes when files are updated.

Because disabling RDC can help conserve disk input/output (I/O) and CPU resources, you might want to disable RDC on a connection if the sending and receiving members are in a local area network (LAN), and bandwidth use is not a concern. However, in a LAN environment where bandwidth is contended, RDC can be beneficial when transferring large files.

To enable or disable RDC for a specific connection

  1. Click Start, point to Administrative Tools, and then click DFS Management.

  2. In the console tree, under the Replication node, click the replication group that contains the connection you want to edit.

  3. In the details pane, click the Connections tab.

  4. Right-click the connection, click Properties, and then on the General tab, select or clear the Use remote differential compression (RDC) check box.


  • Changes to RDC settings are not applied immediately. The RDC changes must be replicated to all domain controllers, and the sending and receiving members must poll their closest domain controller to obtain the changes. The amount of time this takes depends on Active Directory replication latency and the long polling interval (60 minutes) on each member.


  • To perform this procedure, you must be a member of the Domain Admins group in Active Directory, or you must have been delegated the ability to manage an existing replication group. If you are the creator of the replication group, you can also perform this procedure.

See Also


Security requirements for setting up and managing DFS Replication Delegate the ability to manage an existing replication group

Other Resources

Microsoft Web site