sure we do same as we did before in VNX and Celerra you can see that in the directory service config in Unisphere  I would suggest to look at the Unity multiprotocol PDF manual and the Unity NAS white paper
Does unity support uid field being populated in AD and not requiring NIS  Background  NIS map files are generated from AD as an interirm step to remove NIS dependency.  Want to use unity using AD only for uid resolution rather than creating another NIS dependency.
unity unix access post NIS world