Switching file system request in a mass storage system
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United States of America Patent
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Mar 30, 2004
Grant Date -
N/A
app pub date -
Dec 13, 1999
filing date -
Dec 13, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a method and system for routing or switching file system requests in a mass storage system. The mass storage system includes multiple storage devices coupled using fiber channel to a routing or switching device disposed internally within each shelf of mass storage devices in the mass storage system, and coupled directly to each individual mass storage device in that shelf. The switching device receives requests, identifies an individual target storage device for each such request, and sends each such request to its designated target storage device. The switching device also receives responses to such requests from each individual storage device within the shelf, and sends those responses from the storage device to an external medium with which the response can be delivered to the original requester. One advantage of the switching device is that the switching device can maintain communication bandwidth between the mass storage devices and external devices approximately equal to the communication bandwidth of a single fiber channel times the number of point-to-point connections.
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