Computer system and data sharing method between computers

Details Computer system and data sharing method between computers Computer system and data sharing method between computers

2006-10-03

2006-10-03

Najjah, Saleh (Department: 2155)

Electrical computers and digital processing systems: multicomput

Multicomputer data transferring via shared memory

Partitioned shared memory

C707S793000, C711S162000

Reexamination Certificate

active

07117249

ABSTRACT:
A data sharing method for use in a computer system provided with a first computer, a second computer and a data storage subsystem for connection with the first and second computers is disclosed. The data storage subsystem has a plurality of memory units and a control unit for controlling the plurality of memory units. The control unit forms a paired state of a first memory unit storing data for use by the first computer and a second memory unit, the paired state being so controlled as to match the contents of the first memory unit and those of the second memory unit. When data used by the first computer are to be used by the second computer, the control unit releases the paired state between the first memory unit and the second memory unit to stop updating of the first memory unit to be reflected in the second memory unit. After that, the control unit re-maps a third memory unit used by the second computer and the second memory unit with each other, and so performs control that the access by the second computer to the third memory unit be made to the second memory unit.

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“Main Frames 98”; Nikkei Computer Magazine; pp. 214-216; (translated from Japanese to English).

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