You have the ability to connect a third-party storage back end, EMC VMAX in our case, and have all NetApp functionalities available. NAS on EMC VMAX was not possible in the past. It is nice to be able to connect to other storage and use all the NetApp functions (Snapshot, SnapClone, SnapMirror). It was also the start of virtualization and we used V-series for ESX (Dev and Prod). Now, we have everything on FAS (NAS and SAN).