I'd like to upgrade my 2008R2 DC's to 2012 to add manageability to our growing amount of Windows 8 devices.
Setup: I have 2 DC's running 2008R2 one physical one VM.
Q1: I've read it's best practice to create a whole new 2012 DC then demote the primary DC transferring the FSMO & PDC roles in the process to the 2012 DC, then upgrade the backup (in-place upgrade) DC.
Q2: The backup DC also carries the FSM & DHCP roles. Will there be any gotchas for an in-place upgrade?
Q3: Should I just do a in-place upgrade on both DCs and be done with it?