The external multi-bay tower series are designed specially for storage applications. The wide variety of the tower with hard drive cages is able to easily max the hard drive capacity up to 3 bays for storing mass data. Optional 120mm cooling fan can be added to enhance the ventilation inside. The external NAS tower chassis with solid construction is a cost-effective and flexible solution for your critical data storage.
Drives are typically installed in "trays" which then get installed into computer/server/etc. Trayless means that you simply insert and lock a hard drive into position without needing to install the drive in a tray first..