Back in 2006 i designed this fileserver case together with a friend as an alternative to a traditional server.It was designed to be small enough to fit in a bookshelf, but still be able to carry five 3,5" HDD's. Noise kept to a minimum using a fanless Mini ITX motherboard. To keep the temperature down a 120mm case fan was fitted in the back pulling the air thru the case.
Some more info for those interested here (in swedish): http://www.sweclockers.com/galleri/563-5tb-mini-filserver
This project is licensed under the Creative Commons - Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0): http://creativecommons.org/licenses/by-sa/3.0/deed.en_US