We currently have an Active Directory system based around 2 Windows Server 2000 servers. We would like to replace this with a Server 2012 R2 Essentials based AD / file server.
Since we cannot simply add the 2012 system as an AD server to the old system, we are planning to do it in the following way. Is this the best way, and are there anything we should look out for.
S1 = Server 2000 primary domain controller.
S2 = Server 2000 secondary domain controller.
T1 = Temporary Server 2008 system.
F1 = Final Server 2012 system.
- Update S1 to 2008 compatible, using adprep (forestprep & domainprep) to allow 2008 DC to join domain. (DONE).
- Spin up temporary 2008 server – DONE (T1).
- Promote T1 to DC – DONE.
- Make T1 master.
- Demote all other existing DCs (S1 and S2).
- Upgrade forest to 2003/2008 functional level.
- promote F1 to DC.
- Make F1 master.
- Demote temporary server T1.
- Remove temporary server T1 from domain/existence.
- Run 2012 essentials install wizard on F1.
Does this seen reasonable, or is there a better way. Also, are there any things we should look out for or that we can use to test things as we go along.
Finally, I believe there is a 21 day limit on how long the 2008 server can be in an AD system with more than one machine. Does this limit start when we install the OS / add it to a domain, or when we first make it an AD server.