Netgear RND4000-100NAS ReadyNAS NV+ 4-Bay Desktop Network Storage

A little pricey at $849.99 with no disks, but really looks interesting.
Amazon.com: Netgear RND4000-100NAS ReadyNAS NV+ 4-Bay Desktop Network Storage (No Disk): Electronics

  • Desktop Network Storage Device offers an easy-to-configure and cost-effective way to store data and stream digital media
  • Ultra-compact box has four empty bays (no disk), and is designed to fit easily on your desktop
  • Hardware-accelerated RAID and X-RAID technologies combine for a simpler, more secure way to protect and store your data
  • Advanced-server monitoring features alert you via email when something is amiss; it even shuts itself down if the operating temperatures of the disks are too high