Method, system, and program for processing input/output (I/O) requests to a storage space having a plurality of storage devices
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United States of America Patent
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Nov 16, 2004
Grant Date -
Sep 25, 2003
app pub date -
Mar 25, 2002
filing date -
Mar 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Provided are a method, system, and program for processing Input/Output (I/O) requests to a storage space having a plurality of storage devices. An Input/Output (I/O) request is received directed to a target location in a target storage device in the storage space, wherein the storage space includes at least two adaptors providing access to the storage devices. A determination is made of a plurality of paths to the target storage device, wherein a path comprises one adaptor or one adaptor and at least one intervening storage device. A determination is made of a characteristic of each determined path. One path is selected based on the determined characteristic and the I/O request is transmitted to the adaptor in the selected path.
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