Storage subsystem and performance tuning method
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United States of America Patent
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Oct 25, 2011
Grant Date -
Dec 23, 2010
app pub date -
Aug 27, 2010
filing date -
Feb 26, 2004
priority date (Note) -
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Abstract
The storage system includes a storage subsystem including a plurality of storage units and a storage control device coupled to a computer and the storage subsystem, the storage control device providing the host computer with a logical unit assigned to a storage unit of the storage subsystem. The storage control device receives a first access request from the computer to the logical unit and sends a second access request to the storage unit of the storage subsystem according to a relation between the storage unit of the storage subsystem and the logical unit assigned to the storage unit. Performance information relating to the second access request by the storage control device is obtained so that the storage control device determines performance relating to the logical unit assigned to the storage unit of the storage subsystem.
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