METHOD AND DEVICE FOR GIVING BI-DIRECTIONAL CONTROL BETWEEN DATA STORAGE DRIVE AND AUTOMATIC CONTROLLER

摘要

PROBLEM TO BE SOLVED: To provide a method and device of a low price capable of keeping the utilization of an existent data storage device while utilizing a high band. SOLUTION: The device includes at least one data storage devices (44) which can be arranged so as to be connected effectively to at least one computers (22), an automatic controller (46) constituted so as to give at least one data storage medium to the data storage drive 44 physically, and an extension interface (50) which can be arranged so as to connect the device (44) to the controller (46) effectively to selectively control the device (44) by the controller (46) and to selectively control the controller (46) by the device (44) in accordance with a received instruction.