Join ActiveDirectory (Win 2k8R2) to OpenDirectory(Snow Leopard)
Solution 1:
What you want to do may be possible. It depends on a few things though. What is the central identity store? Is it OpenDirectory? And what would be the impact in having the sync work in reverse? (i.e. is it feasible to manage users in AD and have that sync back to OD?) Where are your shares to be stored? Does it matter?
This will probably require substantial experimentation and testing, but you may be able to achieve some level of success using Centrify Express or Likewise Open (although I think that's been renamed now). As you have stated these are geared towards getting your non-Windows clients to authenticate against AD as opposed to the other way round, but seeing as you are already considering using a Wn2k8R2 domain controller, this may be the way to go.