I have the following AD environment:
Functional Level: 2003
1 Windows Server 2003 = PDC, all FSMOs, Primary DNS, DHCP
1 Windows Server 2008 R2 = Backup Domain Controller
I am planning to add another Server 2012 R2 to become my next Primary Domain Controller. I will be migrating all FSMO roles from my Windows Server 2003 PDC to this new server and then decommission the Windows Server 2003 server and elevate the functional level of my domain to 2008.
My question is do I have to run ADPREP again before I can raise the 2012 server to become a domain controller?