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TARGET PATH SELECTION FOR STORAGE CONTROLLERS

  • US 20130311719A1
  • Filed: 03/12/2013
  • Published: 11/21/2013
  • Est. Priority Date: 05/18/2012
  • Status: Active Grant
First Claim
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1. A redundant array of independent disks (RAID) controller associated with a plurality of storage devices attached to said RAID controller, comprising:

  • an initiator I/O module for receiving data storage commands;

    a plurality of target ports for communicating with said plurality of storage devices;

    a network discovery module configured to identify said storage devices;

    a storage device interface communicating with one or more of said storage devices;

    a RAID I/O module directing said data storage commands to said storage device interface;

    a path collection module maintaining a set of active target paths available to said storage devices;

    a path selection module operable to select desired target paths from one or more of said active target paths, wherein said path selection module is configured to automatically configure the desired target paths to individual storage devices as a function of characteristic parameters of said target paths; and

    wherein said RAID controller generates one or more storage device I/O requests to said storage devices using one of the desired target paths determined by said path selection module.

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