8-bay 3U NAS enclosure for 10" Mini-Racks
Just using normal drive shelves, you can get a max of two 3.5" drives per 1U of rack space. This enclosure uses a Jonsbo N3 backplane to enable 2.67 drives per 1U. A small improvement but more is always better when it comes to storage.
I published this design on Printables.