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Storage area network multi-pathing

  • US 8,732,334 B2
  • Filed: 05/04/2012
  • Issued: 05/20/2014
  • Est. Priority Date: 05/06/2011
  • Status: Active Grant
First Claim
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1. A computer program product comprising code implemented in a computer readable storage device for sending Input/Output (I/O) requests to a storage system over a network, wherein the code is executed to perform operations, the operations comprising:

  • maintaining paths to the storage system through a first network type and a second network type in the network, wherein the first network type has a higher Input/Output (I/O) per second performance characteristic than the second network type;

    receiving an I/O request;

    determining a length of the I/O request;

    sending the I/O request on one of the paths to the storage system through the first network type in response to determining that the length of the I/O request is below a threshold length; and

    sending the I/O request on one of the paths to the storage system through the second network type in response to determining that the length of the I/O request is above the threshold length.

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