I am moving our 2003 SBS server to a new machine, and upgrading it to 2008 R2 SBS standard.
I want to install the 2008 server as a second DC, leave both online for a week, to make sure the second server is operating correctly, then transfer roles from the 2003 to the 2008 server.
I have 15 CALs installed on the 2003 server.
What do I need to know to allow them both to function concurrently for a week license-wise?
I am not asking about anything technical in terms of the migration/install/decommission .