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System and method to failover storage area network targets from one interface to another

  • US 7,127,633 B1
  • Filed: 06/28/2002
  • Issued: 10/24/2006
  • Est. Priority Date: 11/15/2001
  • Status: Active Grant
First Claim
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1. A storage area network comprising:

  • a plurality of loosely coupled storage controllers arranged in a redundant configuration;

    respective sets of front-end interfaces, each said set associated with one of the storage controllers and each front-end interface in a respective set providing access to one or more associated targets, to one of a plurality of connected servers;

    wherein the storage controllers are arranged to include only one master controller and one or more slave controllers anda configuration and control board in each storage controller configured to move any targets associated with a respective front-end interface to one or more other front-end interfaces, wherein only the configuration and control board in the master controller is permitted to move a target from one front-end interface to another by changing configuration information relating to the storage area network maintained by the configuration and control board in the master controller.

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