I am planning a Windows SBS 2003 R2 migration next week for a customer, and have read through the Microsoft documentation "Migrating to Windows Small Business Server 2008 from Windows Small Business Server 2003".
I understand the process and am confident I have all my ducks in a row for the migration, including a checklist and a project plan.
However, I would like to retain the old server as a second domain controller, with file and print services, but would like to upgrade it to Windows Server 2008 Standard after I've demoted it using
dcpromo. In other words, I don't really want to reinstall Windows on that box if I can upgrade it instead.
Is this possible? Is it ill-advised? Should I simply take the pain and reconfigure the users to use the new server with
an entry in the a DNS alias, and then set up the second box after the fact just as a backup DC?
hosts file pointing to the new box