I have a small office about 8 users that has been on server 2003 (named WDS1).
They have a domain and everything has run fine for years.
Recently I moves all of their files and functions to a new server 2008 R2 server (named WDS2).
I made WDS2 a member server and then a domain controller and operational master for RID, PDC and Infrastructure. This all went smoothly.
I would like to keep WDS1 on site but powered off as a backup server. So, I do not want to demote it from it's role as a domain controller.
When I unplug the network cable from WDS1 and reboot WDS2 there are a lot of problems.
1) Only two users can map a drive to WDS2 (one is XP a one is W7)
2) There are hesitations when I look at the AD users on WDS2
3) WDS2 takes a long time to boot.
I have pointed the client computer tcp/ip DNS settings to the IP of WDS2.