Over the last year we have migrated almost all services that used to run on our Windows server (SBS 2003 Premium) to another server running Linux. The last few services will shortly be moving to a new Windows 2003 Server running as a VM on top of the Linux box - we plan to keep this VM long term as we anticipate there will always be a need for certain software that will only run on Windows.
As all of the migrated services (email, fileserver etc) use their own authentication, I am left wondering if the benefit of keeping the windows domain is outweighed by the cost (primarily increased complexity for disaster recovery). Should I take the opportunity to get rid of it entirely if there is no obvious need to keep it?
The company has about 20 desktops, including several that are not currently joined to the domain because they are XP Home boxes got on the cheap.