I run FreeNAS on a C6100 node. I go way overkill with CPU and 24GB of ECC RAM, but I also use (read: abuse) the FreeNAS server plugins. Crashplan and Plex are used daily, but I also have OwnCloud, Transmission, CouthPotato... the list goes on. I like the set-up and the management has been really easy with updates, drive replacement (expansion and failures), and the controls for file access.