We have a main site with several subsites. THe main site holds 2003 Domain Controllers with FISMO roles, each sub site has 2 x 2003 Domain Controllers.
We are now looking to add a 2008 Domain Controller to the network.
Is there any reason why we shouldn't place the new 2008 Domain Controller in a subsite rather than the main site? (Bandwidth is not a concern). On the other hand Is there any reason to put the new 2008 DC at the main site?
Finally, should we move any FISMO server roles to the 2008 server?