System and method for performing virtual device I/O operations
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United States of America Patent
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May 30, 2006
Issued Date -
N/A
app pub date -
Aug 30, 2004
filing date -
Dec 27, 2002
priority date (Note) -
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Abstract
Systems, methods, apparatus and software can make use separated I/O processors and strategy processors in performing virtual device I/O operations. I/O processors operating on cluster nodes, storage appliance ports, or other devices can receive I/O operation requests directed to virtual devices, e.g., volumes or virtual logical units. Information about the request is forwarded to a strategy processor, operating independently or as part of larger volume management software where corresponding physical device I/O operations are determined. The physical device I/O operations are sent back to the I/O processor which executes the operations and/or passes the operation on to the appropriate storage device.
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