That is an interesting article, thanks Ron.
However, 12 hard disks in each brick in a 3x3x3 cube is a lot of hard disks (324) - anyone know how many watts are needed to run that many disks spinning up? - power requirements will be the limitation imo. - a 4x4x4 cube would be 768 hard disks fgs
Developing the technology for modular solid state memory might be more viable?