I have two domain controllers, both with AD on them. recently the power supply failed in the main domain controller. I assumed that I could enable the DCHP on the other controler and everything would be ok. however I was unable to log onto the second server as it could not authenticae my logon. If I logged on locally I could not activate the DHCP, as I didn't have enough permissions.
I got over the problem by finding a new power supply for the primary domain controller, but I want to make sure that if I loose the main server again I can switch to the other on.
What am I doing wrong?