Described is a midplane-less data storage enclosure having a control board module with an electrical connector and a bulkhead assembly with a plurality of spaced-apart disk-drive guides coupled to a bulkhead. The disk-drive guides and bulkhead together define a plurality of disk-drive slots. The bulkhead has connected thereto a plurality of first electrical connectors and a second electrical connector in electrical communication with each of the first electrical connectors. Each slot slidably receives a storage disk drive such that the storage disk drive electrically connects to one of the first electrical connectors. The second electrical connector is electrically connected to the connector of the control board module so that each storage disk drive connected to one of the first electrical connectors is in electrical communication with the control board module.