We have a CIFS share on our FAS2240 that is about 2TB in actual size. We get an incredible dedupe rate of 66%, so used space is only around 900GB. I would like to host this data from a Windows Server 2012 R2 vm instead of directly off of the Netapp CIFS. My question is how much dedupe percentage will I lose by doing this? I assume there is some overhead from putting those files inside NTFS on top of VMFS that would make dedupe less efficient.