Multiple logical input/output subsystem facility
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United States of America Patent
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Oct 30, 2007
Grant Date -
Nov 18, 2004
app pub date -
May 12, 2003
filing date -
May 12, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An input/output subsystem is configured as a plurality of input/output subsystem images, each of which appears to a program as an independent input/output subsystem. An input/output subsystem image is identified by an input/output subsystem image identifier, which is used by various programs to designate the particular input/output subsystem image for which an I/O operation is to be performed. An input/output subsystem image includes, for instance, one or more input/output paths. An input/output path of an input/output subsystem image is identified by an input/output path identifier, as well as a physical input/output path identifier.
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