COMPUTER, HARD DISK DEVICE, DISK DEVICE SHARING SYSTEM CONSTRUCTED OF A PLURALITY OF COMPUTERS AND SHARED HARD DISK DEVICE, AND SHARING METHOD FOR DISK DEVICE USED IN THE SYSTEM

摘要

PROBLEM TO BE SOLVED: To realize safety data communication between respective computers and a shared hard disk device mutually connected via a network and to provide a disk device sharing system reducing the operation cost required for maintenance of the computers.

SOLUTION: Two OS are mounted on a single computer. One is a first OS executing an application program, while the other is a second OS processing communication with the shared hard disk device. Access from the application program to the shared hard disk device is always passed through the second OS, and control is carried out so that direct access from the application program and the first OS to the hard disk device is not allowed.

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