SBS is out of the question since it wouldn't allow us to grow without having to purchase new licensing. We actually have other branch offices that we may want to add to these services later on. My initial idea was to have a simple DC, DNS, and DHCP to make management easier and improve security, as well as a shared file system to store important documents, files, etc... The environment has a only a few power users, and for some users it would be beneficial to have a roaming profile or redirected folders. Virtualization with a SAN sounds like an ideal solution, but that could easily double my budget of around $12,000 USD for this year.
Just a step in the right direction this year, would it be better to purchase a smaller spec 1u server for DC, DNS, and DHCP? We could then use a similar 2u server as mentioned above (maybe 2 x quads) to provide backup DC, DNS, DHCP, anti-virus and file storage? The active directory and DNS services would be the most crucial to have high availability.
Thanks for all the replies. You guys don't waste anytime =)