I would like to be proactive the upgrde from AD 2003 to 2008 R2. I have currently 3 2003 ADs and 4 2008 R2 ADs and eventually AD 2003 will be demoted. One of 2008 AD has a FSMO roles. I am going to demote those 2003 ADs but I don't have anything broken. Is there any thing that I have to concern? Any suggestions when I demote the last 2003 AD which had a FSMO roles before?
Thanks in advance.