A crystal growing device includes a furnace, a platform, a crucible, a heating unit, a heat transmitting block, and a heat exchanger. The buds are large and the blossoms possess no fragrance. The system also includes a zero-voltage switching assistance circuit having first and second inverse controlled rectifiers. The length and diameter of the diffusion path precludes transfer of humidity from the external environment of the data storage device to the internal environment of the data storage device.