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Method for controlling data throughput in a storage area network

  • US 20070115846A1
  • Filed: 11/01/2005
  • Published: 05/24/2007
  • Est. Priority Date: 11/01/2005
  • Status: Abandoned Application
First Claim
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1. A method for controlling data throughput in a network including a source site and a destination site interconnectable via a network link using an inter-site communication protocol different than an intra-site communication protocol used within the source site;

  • wherein the source site includes a switch, a source storage device, and an intra-site link which shares data transmitted between the switch and the source storage device; and

    wherein the destination site includes a destination storage device for receiving data from the source storage device via the network link, the method comprising;

    determining round trip PING times for each of a series of PING messages received from the destination storage device in response to corresponding PING messages sent by the source storage device, via the network link;

    sorting the round trip PING times to separate idle PING timing data sampled when the network link was idle, from busy PING timing data sampled when the network link was in use;

    calculating the difference between the sampled idle PING timing data and the sampled busy PING timing data to obtain a delta PING time; and

    adjusting a number of transmission resources associated with the source storage device as a function of the value of the delta PING time and of a current inter-site transmission retry rate;

    thereby reducing contention for said resources on the intra-site link.

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