Hello,
I have 3 different sites that are running their own AD DS servers. The main site has the Forest/Parent DC and the other two sites are running the child DCs. Sometime ago, the child DCs were disconnected from the parent/forest and AD on these child DCs are not getting replicated. Now, I'm in the middle of upgrading the hardware on these sites. Is it possible to remove the child dc from the parent? What is the best way to remove the child dc from the parent? On the parent side, can I remove the child dc?