WAN Traffic Manager controls server-to-server traffic generated by NDS. It can restrict traffic based on cost of traffic, time of day, type of traffic, or any combination of these.
Although it was designed to control traffic across WAN links, WAN Traffic Manager can control NDS traffic between any servers in an NDS tree.
WAN Traffic Manager controls only periodic events initiated by NDS, such as replica synchronization, the Janitor process, and the Limber process. It does not control events initiated by administrators or users, nor does it control non-NDS server-to-server traffic such as time synchronization.