We have a 2003 server "FS1" in place as a fileserver, domain controller, and dns. This was the first DC in our AD and have since added another 3 servers, an exchange, and couple other machines running sql and .net apps, given DC role as well.
We intend to replace FS1 with a Win2008 R2 machine and eventually down FS1. I want to also give the 2008 the role as a 2ndary DNS, when we down FS1 we'll key in the new DNS to all the clients, about 60.
Will the 2008 server participate/co-AD manage well with the 2003 servers? we have group policy scripts to contend with as well.
i admit that i don't have a lab setting to try this out first, getting a win7 client to see the internet even though you manually plug in the gateway and dns entries is hard enough!