Abstract: A modular data device assembly includes a chassis that has an open front and a back. The chassis also has exterior dimensions that correspond to the dimensions of an industry standard drive bay. The chassis further has a plurality of slots that are disposed inside the chassis. The modular data device also includes a plurality of disk data storage devices, a backplane, and a connector. Each disk data storage device is disposed in one of the plurality of slots. The backplane is disposed in the back of the chassis. The backplane has a plurality of connectors which are mechanically coupled thereto and each of which is connected to one of the disk data storage devices. The power source connector is mechanically and electrically coupled to the backplane.