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Method and apparatus for dynamically managing bandwidth for clients in a storage area network

  • US 8,060,643 B2
  • Filed: 08/30/2002
  • Issued: 11/15/2011
  • Est. Priority Date: 08/30/2002
  • Status: Active Grant
First Claim
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1. A method for managing bandwidth allocation in a storage area network comprising:

  • assigning different priorities to different ports of a storage device;

    determining a priority of each of plural client devices relative to other client devices;

    assigning one of the different ports to each of said client devices in order to allocate bandwidth resources to each of said client devices;

    setting an upper limit on an amount of bandwidth allocated at a port for a priority of said client devices;

    setting a lower threshold at the port for said priority of client devices;

    receiving a plurality of Input/Output (I/O) requests from the client devices;

    releasing the upper limit when spurts of I/O activity at the port drop below the lower threshold, wherein the upper limit is released so said priority of client devices have access to unused bandwidth; and

    connecting only clients of a same priority to the port of said storage device.

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