We have three DCs. The oldest of them failed (partition table corruption) and we were able to actually get it to boot enough to move all the FISMO roles to other servers. It also runs DNS. I have another DNS server as well.
As I understand it I do not need to do anything with the DNS, they are all primary.
When I try to run dcpromo to demote the corrupt server it gives me an error saying it could not stop the file replication service. I checked it and it's stuck on stopping.
I can't reboot the server as it took two hours just to start up and login and I don't know if it would start up again.
What can I do to stop the service ? Can I force the removal of the DC from the domain on the other machines? What are the drawbacks of doing this?