Abstract: The present invention discloses a disk array access management system connected between a host computer and at least two independent concurrently operational disk arrays. Each of these arrayas includes a plurality of disks, the disk access management system includes a central processing unit (CPU) executable extension device directly accessible and executable by a CPU of the host computer. The disk access management system further includes a concurrent disk array interface device for interfacing with the concurrent disk arrays for performing disk accesses from the host computer to the disks. The CPU executable extension device is employed for initializing, configuring and controlling the concurrent disk array interface device in performing the concurrent disk accesses operations under direct control of the CPU.