There are few things better in this world to a geek than a project like building a sweet SFF RAID array for storing lots of data. The project is all the better when all the parts for said project are free thanks to companies like Newegg.
A dude named Will Urbina has taken 16TB of storage, crammed it inside SFF computer case, and powered the works with a Quanmax Industrial KEEX-2030 Atom mainboard and Make has offered up the build video. The board has an Intel Atom N270 CPU and controls the hoard of 3.5-inch HDDs inside the machine.
The rig is powered by a 120W PSU and is designed for 24/7 uptime. The drives used are 5400 rpm units to reduce power requirements and the case as even made by hand to fit the works. The entire project is very cool and the finished product is slick indeed. This guy makes me feel like my computer building chops are on par with my 5-year-olds.