Data processing system

Details Data processing system Data processing system

2005-01-03

2009-10-27

Zhen, Wei Y (Department: 2191)

Data processing: software development, installation, and managem

Software upgrading or updating

C717S171000, C710S033000, C710S036000, C710S037000, C710S038000

Reexamination Certificate

active

07610581

ABSTRACT:
In a data processing system which runs a plurality of operating systems, a channel device can be shared by the plurality of operating systems. In addition, a channel device which supports port multiplexing can also be shared by a plurality of operating systems. The channel device includes a plurality of IDs each indicating that the channel device is a medium for performing input/output processing, and an input/output processing controller for assigning one operating system to each of the IDs, and controlling a data transfer independently for each ID to control a plurality of data transfers. Further, in a channel device which has a plurality of ports, an input/output processing controller is provided for assigning an operating system to each of the ports, and transferring data independently for each port to control the plurality of ports.

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