Good day all.
I understand that this issue might have been repeated several times in the previous posts/questions but nevertheless I feel the need to explain the situation I have thoroughly in order to have the right answer.
In our company, we have a W2k3 DC that has a DNS server installed with it. All clients (who happen to have a static IP, subnet, gateway and DNS) use this DC for internal DNS resolution. The hardware on this DC is getting old and we are planning to use it to run an application that acts as a middleware between the machines that we have and our information system.
In order to achieve this goal, I suggested that we buy new hardware and perform replication of AD. According to my understanding of such a procedure, I know that we have to "upgrade" the forest that the w2k3 holds to be compatible with w2k8 and after that we can perform DCPROMO, etc.
My question is: What happens to the DNS server on the old DC after I successfully perform the replication of AD on the new hardware and demote the old DC? It seems to me that I should keep the DNS server there running in order to prevent the action of manually changing the IP settings for all clients in the network.
My other questions is: Should I create a replica for the DNS server as well ?
I appreciate the efforts made on TechNet and thank you for your time.
Nadim.