Abstract: A cryostorage unit includes a cryochamber having a cryo-access port at an upper portion of the cryochamber. The cryochamber defines an internal volume substantially surrounding at least one rack. The cryo-access port is configured to selectively place the internal volume in fluid communication with an ambient space. A cooling agent induces cryogenic temperatures within a first temperature range to the interior volume. A carousel deck is located within the internal volume adjacent the cryo-access port. The carousel deck is located substantially above the at least one rack and suspends the at least one rack downward therefrom into the internal volume. At least one carousel bearing is located in the internal volume and engages with the carousel deck rotational motion of the carousel deck relative to the cryochamber. The carousel deck rotates substantially horizontally.