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Accelerating internet small computer system interface (iSCSI) proxy input/output (I/O)

  • US 9,361,042 B2
  • Filed: 10/21/2014
  • Issued: 06/07/2016
  • Est. Priority Date: 12/19/2008
  • Status: Active Grant
First Claim
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1. A method for accelerating proxy Input/Output (proxy I/O), comprising:

  • receiving a command including a request for data from an initiator system at a primary target storage system, the primary target storage system comprising;

    a first I/O controller communicatively coupled to the initiator system; and

    a second I/O controller communicatively coupled to a proxy target storage system;

    forwarding the command to a session layer of the primary target storage system;

    when the primary target storage system determines that a portion of the data requested in the data request is not stored by the primary target storage system, providing a proxyDataIn request from the session layer of the primary target storage system to the second I/O controller;

    using the second I/O controller, requesting the portion of the data from the proxy target storage system; and

    providing, to the initiator system, a received response to the requesting, wherein the providing includes routing the response from the second I/O controller to the first I/O controller by a connection layer command.

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