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Method of improving the availability of a computer clustering system through the use of a network medium link state function

  • US 7,409,395 B2
  • Filed: 08/18/2004
  • Issued: 08/05/2008
  • Est. Priority Date: 12/21/2000
  • Status: Expired due to Term
First Claim
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1. A method for improving the availability and reliability of a computer clustering system having first and second servers that are connected to each other by a communication link and that each have an associated mass storage device, the method comprising:

  • the first server detecting, over the communication link, a loss of communication between the first and second servers;

    the first server analyzing the communication link to determine if the communication link is functioning properly; and

    if the communication link is determined to be functioning properly, the first server;

    continuing operation;

    assuming a right to survive without communicating with the second server or with the mass storage device of the first server or with the mass storage device of the second server;

    servicing a network request that would otherwise be serviced by the second server; and

    the first server discontinuing operation if the communication link is determined to be not functioning properly.

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