We are currently running a Windows 2000 domain with 1 DC. The 2000 DC is also our DNS, DHCP, file and print server. It will remian the file and print server after the migration, it just won't be a DC. Eventually we will upgrade it to 2003 as well. We also have Exchange 2003 on this domain. It is NOT a DC. We are planning on moving to W2k3 domain and changing our domain from domain.com to domain.loc. We're hoping to post our plan and to get any tips and advice from people out there.
We plan on brining up another 2000 DC to get a copy of the current AD set up. Then we will take that DC off line, and bring it online in a lab environment with the new 2003 domain controllers. The plan is then to set up a trust between the two domains. Both domains have the same administrator user name and password. We will use Microsofts Migration tool, version 3 to the migrate groups, users (along with passwords) in our lab environment. Assuming testing goes well, we will then try bringing down the current 2000 DC and bring up the new 2003 DC on our live network to see if some of our servers and PCs will connect to it. If all works, we keep moving forward. If things fail, we bring back up our 2000 DC and work out the bugs. Our plan is more detailed than this, but hopefully this is enough to get some response.
Any tips and tricks welcome.