I am putting in a new server for a client. Currently he has a domain controller/terminal server which i want to use as a backup redundant server, which will be replaced with a new domain controller/terminal server. Is it possible to have 2 domain controllers on the same network so as I can update data from the active server to the back up server. I don’t want to load balance, the redundant server will only be used in the active server goes down for some reason, thanks.