We have two forests (A,B). Forest trust exists. Forest Level Windows 2003 on both. Forest B is a resource forest.
We're going to upgrade Forest A DC Servers to Server 2012 (not domain and forest level):
1) Add new servers x64 with server 2012 OS.
2) Promote these servers to DC. So, I need to run: "adprep /forestprep" + "adprep /domainprep" + "adprep /domainprep /gpprep"
3) Move AD roles. Remove old DC Servers 2003.
At this moment....
A) I suppose that I can add 2008 DC Servers, not?? (I need to test DC Server 2012. If it fails, I'll install DC Server 2008)
B) Any issue with forest B?