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APPARATUS AND METHOD TO MINIMIZE PERFORMANCE DEGRADATION DURING COMMUNICATION PATH FAILURE IN A DATA PROCESSING SYSTEM

  • US 20090319822A1
  • Filed: 06/18/2008
  • Published: 12/24/2009
  • Est. Priority Date: 06/18/2008
  • Status: Active Grant
First Claim
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1. A method to minimize performance degradation during communication path failure in a data processing system, comprising:

  • supplying a host computer, a storage controller, and a plurality of physical communication paths in communication with said host computer and said storage controller;

    establishing a threshold communication path error rate;

    determining an (i)th actual communication pat error rate for an (i)th physical communication path, wherein said (i)th physical communication path is one of said plurality of physical communication paths in communication with said host computer and said storage controller;

    operative if said (i)th actual communication pat error rate is greater than said threshold communication path error rate, discontinuing use of said (i)th physical communication path.

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