Method and apparatus for populating and operating a storage enclosure carrier with multiple hot swappable storage devices. In some embodiments, a carrier housing having length, width and thickness dimensions is adapted to accommodate at least one hard disc drive (HDD) having a selected HDD form factor and configured for engagement in a storage enclosure housing. A plurality of solid state drives (SSDs) each conforming to a selected SSD form factor are supported within the length, width and thickness dimensions of the carrier housing. Each of the SSDs is individually retractable from a front facing portion of the carrier housing without removal of the carrier housing from the storage enclosure housing.