Moving a backup domain controller from a remote office.
Posted on 2016-10-24
I have a customer that needs to move a windows server DC 2012 back into the main office. I used it as a backup DC through the VPN, and they used it locally as a file server, and their DHCP, DNS server.
Once I turn off the remote's server DHCP, re-point change external DNS to our DC in the home office, will it cohabit with our local dc without further configuration changes, and still act as a backup dc, or should I run DC Promo and downgrade the remote site first, then run dcpromo again to upgrade once I get it back at the main office? Incidentally, the DC at the home office is 2003 R2.