I recently added a new domain controller (Windows 2008 R2) to a domain containing a single SBS 2003 server. I need to get rid of the original server (or at least any dependence on it) as it is quite old and no longer eligible for hardware support.
I moved all the the FSMO roles to the new server without issue. When the two servers are running there are no apparent issues with the domain functionality. When I shutdown the original server the domain still appears to funtion without issue. However, when I restart the new DC while the original DC is daown it does not come up correctly i.e. it doesn't recognize the domain, it has no DNS, and it is not seen by any of the Domain Computers as a DC. When I then start the original DC the problems go away. I'm thinking the problem is in DNS because I am seeing a couple of odd things in DNS.
Here's what I'm seeing in the DNS:
1) I noticed that when I open the DNS Manger on the new server and try and connect to the original DNS server the connection works fine. The reverse is not true. I can't connect to the new DNS server from DNS Manager on the original server.
2) When I ran dcdiag it gives me the dcbyguid error of the SRV not being registered but it look in DNS Manager the domain shows up. However, the guid differs from the domain guid I get when I open ADSIEDIT.
I'm a bit stumped.
Oh, I should also mention that I added a file server role to the new DC with DFS. Is that a potential problem?
