Method and system for providing computer storage access with quality of service guarantees
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United States of America Patent
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Aug 13, 2002
Grant Date -
N/A
app pub date -
Oct 15, 1999
filing date -
Oct 15, 1999
priority date (Note) -
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Abstract
A method and system for servicing disk I/O requests from domains which have been guaranteed minimum quality of disk service maintains I/O requests for each domain are in separate queues. The queues are serviced by a disk scheduler which selects requests from the queues in accordance with a fair queuing scheduling algorithm that considers the estimated time required to service the request at the head of a queue with regard for the size of the input or output associated with the request, the proportion of disk bandwidth assigned to the particular domain, and the state of the other queues.
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