I have just started a new job. One of the first tasks is to upgrade the domain functional level from Server 2003 to Server 2008 R2.
I know how to do this, however I am unsure of the impact to the services running on our Server 2003 member servers.
My understanding is that once I raise the domain functional level, I can't go back, so I need to make sure any Legacy 2003 services will work in the new domain level.
Is there any tools out there that will help me identify what could present a problem?
My only other solution would be to migrate our old 2003 servers to 2008 R2 before upgrading the domain functional level.