Intercepting control of a host I/O process

Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique

Reexamination Certificate

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C711S161000, C707S793000

Reexamination Certificate

active

06986009

ABSTRACT:
A data-mirroring method in which, while an I/O process is processing a first I/O request for writing data to a first device, control is obtained from that I/O process executing on a host computer. A second I/O request, this one for writing the data to the second device, is then created. Then, control is returned to the I/O process by causing the first I/O request to be made available to a first data storage system managing the first device.

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patent: 2002/0049925 (2002-04-01), Galipeau et al.

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