I have a global multi-site domain. When running windows 2003 AD I have a DC in every main site ( 20 people or more) Totaling 12 sites. I have recently upgarded Central Site to windows 2008 and would like to reduce the AC replication traffic throughout the network by reducing the number of DC's. Perhaps only at the 4 main sites with over 50 people.
DOes anyone have a MS guide or can offer advice on which sites should qualify for a DC.