Our DCs are all on Win2008R2, we are planning to upgrade them to Win2012R2.
In-place upgrade is not an option. so we will start adding new Win2012R2 DCs into Domain, then remove DC role from Win2008R2 DCs later. we still have to keep those 2008R2 DCs alive since we still have other stuff running on the server.
So in this case, the IP on new 2012R2 DCs will be changed.
Is there a better way to make sure all DNS settings will be updated on all domain PCs and servers. I am not sure if I have to manually change the DNS on all domain machines or by script.
