Storage subsystem that connects fibre channel and supports online backup
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United States of America Patent
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Jul 8, 2008
Grant Date -
May 12, 2005
app pub date -
Dec 20, 2004
filing date -
Mar 2, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A disk array connected to a storage area network via a fibre channel has one or more ports each controlled by a processor. Even the disk array with one port and one processor executes online processing and backup processing at the same time while considering an online processing load. A port controller not only accepts a request from a host computer but issues a request to other storage controllers to allow online processing and backup processing to be executed at the same time. In addition, the disk array, if provided with a plurality of ports, selects ports or schedules processing depending upon the load to prevent backup processing from affecting online processing performance.
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