http://blogs.technet.com/greg_katz_-_messaging_in_education/archive/2008/05/30/planning-for-ocs-2007-part-ii.aspxTopology!!! Most of the time I get questions that start out with, “How many servers Greg?” “I have this many users….”, etc. It’s important to understand how functionality plays a big part in designing and OCS deployment and how the topologies are defineden-USCommunityServer 2.1 SP1 (Build: 61025.2)