The technology disclosed herein provides a system including multiple selectable storage devices in an enclosure communicatively coupled to shared control electronics the shared control electronics including a first controller for selecting a storage device of the multiple selectable storage devices for execution of a device access command, the multiple scalable storage devices including a plurality of NVM storage devices and at least one hard disc drive (HDD) and a first signal path for transmitting a drive selection instruction from a host external to the enclosure to a first controller the first signal path being a PCIe electronic interface configured to communicate with a host, wherein the plurality of NVM storage devices shares a capacitor bank for power loss protection.