A data storage array linking operation switching control system is proposed, which is designed for use in conjunction with an array-type data storage device that is composed of a plurality of data storage unit and associated with at least two data access channels, with the capability of selectively switching the linking between the data storage units and the data access channels for the purpose of providing various linking modes of different utilization objectives with hot spare capability, including a backup linking mode, a partitioned linking mode, and a high-performance linking mode. This capability allows the array-type data storage device to be set to different linking modes based on different utilization objectives, which allows the system management of network servers to be more flexible in application.