I'm going to make the call. For the purposes of the beta testing before the game goes live this is how we will manage the factions and servers:

US East 1 - Vanu
US West 1 - Terran
US East 2 - NC

You can only use your name on your character once and not across the servers. For example I have a Terran named, "PrimusPalus" and a Vanu named, "Shields". We'll have to come up with a specific naming system but for now, try and come up with something that will work.