We do have 4 Windows Server 2008 R2 Domain Controllers in our environment, i.e. one physical and three virtual.
Our Primary DNS and DHCP is running on physical.
Physical server's hardware is going bad and its warranty is expired too; therefore, we need to move primary DNS and DHCP to one of the other virtual servers. So, if it dies, we will shouldn't be impacted.
So, how can I move primary DNS, DHCP, and other AD roles to other Domain Controller? or Are there any other advice as well?