Computer, hard disk device, disk device sharing system composed of the plural said computers and shared hard disk device, and sharing method applied to the said sharing system

摘要

There is provided a disk device sharing system which, in an environment in which plural computers and a shared hard disk device are interconnected via a network, can realize safe data communication between the computers and the hard disk device and can reduce the operation cost needed for maintenance of the computers. One computer is equipped with two OSs. One is a first OS executing an application program. The other is a second OS performing communication processing with a shared hard disk device. Access from the application program to the shared hard disk device must be done via the second OS. The application program and the first OS are controlled so as not to directly access the hard disk device.