We're running Windows 2000 as our domain controller (!) and a separate backup domain controller, but as the PDC is 12 years old we would like to replace it. We have a couple of 2008 R2 and Win 2012 (virtual) servers in the office used for other functions which we would like to use as the PDC/BDC.
Is there a way to migrate the domain controller function from the Win 2000 server to the Win 2012 server or would we have to go via 2003 or 2008? Is it a simple matter of adding the new servers to the domain and somehow promoting them to be the primary domain controller or is it more complicated? Overall it's a small network with around 12 computers. Unfortunately I wasn't the one to set up the network in the first place so I'm not totally familiar with domains and Active Directory etc. Any help or advice would be appreciated.