We have an single AD domain with a mix of 2003 and 2008 DCs, and are moving to demote the 2003 DCs in order to migrate to a pure 2008 forest/domain functional level.
Two of the 2003 DCs provide AD-integrated DNS services for many locations, and we're working in DHCP and on statically-addressed servers to point to the 2008 AD-integrated DNS servers instead.
The list of servers and remotely located PCs that use these servers for primary/secondary DNS is long. I want to demote these 2003 DCs but keep them active as DNS servers until we clean everything up.
What's the best way to accomplish this, and what happens to their "AD-integrated" status after demotion?
Thanks for your help!