Exemplary embodiments of apparatus and method according to the present disclosure are provided. Each redundant storage controller monitors latency for round trip communications between the redundant controllers by calculating a time required to mirror a write to the other controller and receive a write acknowledge. An output signal generated by the sound detector is processed to generate a control signal used to reject a defective container. A pair of driers may be mounted to the lower basin. By using status indicator flags, microprocessors are able to determine whether the data in memory is current and whether or not it had been utilized.