Fs7600 and multiple AD integration

Hi We are getting FS7600 to replace EMC ns20, now I am bit worried if fs7600 can do what ns20 has been doing for years Such as 1) integrate with multiple none trusted windows AD. 2) vlan tagging so that we can use same trunking port to transfer data for multiple AD. 3) dedupe of CIFS data. I know it can integrate with AD but no where could find the things I am worried about. Does any one know if above can be done? Any link to document will be appreciated. Thank you