Is it possible to dcpromo a 2008 R2 domain controller, but leave AD services installed so it can continue servicing DNS and DHCP? (It is running AD-integrated DNS and all the DC's are using DFS replication)
The reason I am asking is because this DC is the "primary" DNS and authentication server, so I am trying to keep it as DNS server to I don't need to immediately change every device pointing to it.