I would still defer to something with ECC RAM and ZFS for keeping my data, but I could see myself using something like this for unimportant data and/or serving

I would still defer to something with ECC RAM and ZFS for keeping my data, but I could see myself using something like this for unimportant data and/or serving important data as a read-only mirror. Either way, I love that an RPi system will soon come in a sweet form-factor optimized for NAS use.