This is my first time using AD with any type of Sites & Services setup. Basically I have a network with 3 locations all seperated by T1 lines that are connected in a triangle, with each site connected to each other site. the three sites are 192.168.110.0/24, 192.168.111.0/24, and 192.168.112.0/24. The main site has another t1 that is the internet connection. All routing is being taken care of by cisco routers(2600.1300, and a pix 506) I have a windows server 2003 DC in the main location and I want to install a second DC in one of the other locations. Basically the goal is to have the main site with the original DC user's authenticate to the DC in the main office, but still have access to servers/pcs in the other offices via DNS names. I also want to have the second location authenticate to the new DC that i will be installing in the second office. the third office will not be using a DC at this time and it's computers are on a workgroup. As of right now there is only one domain and one forest, and no sub-domains. I want to keep traffic to a minimum until after hours, how can i configure the DCs to do replication after hours? How can I make sure users are authentication to the DC on thier local subnet and not a DC across a T1 line?
How should I go about getting this configuration setup according to m goals? Is it a good idea to keep everyone on one domain and DNS namespace? For smplicity's sake i'd like to keep everthing on the domain that's in place now called prso.local The total number of PCs between all sites is less than 75.
I'll need some serious step by step instructions after we get the overall plan organized.