Personally, would suggest to wait off on the Drobo for Version 2.0
Because, besides the $450 cost, add another $150 if you want to use it as a NAS.
That is before adding any drives. And no firewire or eSATA.
Even Western Digital has come around with a 1TB drive with USB, Firewire & eSata for around $200. Add a Print server any you've got a NAS.
Now the Idea of turning your old PC into a Linux based NAS would work, but it is really inefficient power wise, and will probably not look very nice on your cabinet.
