Migrate Domain from 2003 32bit to 2008 R2 64 bit?
Posted on 2011-03-15
Need to finally update our 2003 servers (32 bit, some 2003 some 2003 r2) to 64 bit architecture, on Win 2008 R2 servers.
With 32->64 bit I guess I cannot do in-place upgrades, which means installing new servers. I have 4 Domain controllers, but am willing ot move to a virtual environment with the new systems. I assume the domain doesn't care about 32 bt vs 64 bit and that this is simply an OS difference, meaning I don't need to do special prep on the domain relevant to this architectual change, but just for the 2003 -> 2008 one?
As I understand it I should just create a new VM, install Server 2008 R2 on it, update it and get ready to install the role of Domain controller on it. I believe I need to do some work with the domain to support the 2008 DC first? ADPrep or such? I assume after that is done the data would replicate over to the 2008 DC and I could then repeat for another DC, decommissioning the old 2003 servers as I go. I figure I would need ot transfer some roles (FSMO, and the like?) to the new 2008 DCs before I decommision the server that currently holds those roles?
I have an idea I guess of what I need to do, but does anyone have a guide for this sort of thing?
Thanks a lot!