I don't expect anyone to answer thsi in great length as there is plenty of info out there BUT I would like advice on which way to appraoch this!
I have 3 sites and 3 x DC's all on physical x86 architecture and Windows 2003 Enterprise.
I want to Upgrade them to Windows server 2008R2.
My problem is 2008R2 is ONLY 64bit.
I'm GUESSING i would do one of the following:
- buy 3 new physical servers and install a fresh 2008r2 and then somehow move all the roles across and decomission old DC's
- add 3 new 2008r2 DC's and trust/sync them up and then shut off od ones?
- Do some virtualisation, but is having DC's as VM's practical/best practise?
Does anyone have a good step-by-step link/guide?
Any feedback would be greatfuly received or any advice or gotchas from someone who has done this very thing?