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Mothed and apparatus for improving software availability of cluster computer system

  • US 20030079154A1
  • Filed: 12/17/2001
  • Published: 04/24/2003
  • Est. Priority Date: 10/23/2001
  • Status: Abandoned Application
First Claim
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1. A method for improving software availability of a cluster computer system including a number of primary servers and spare servers, said method comprising the following steps of:

  • collecting system state information about the number of primary servers to monitor unstableness of the servers;

    if at least one of the servers is judged unstable as a result of monitoring, judging existence of a spare server or other primary server having spare capacity;

    if at least one of the spare servers or the primary servers having spare capacity exists, duplexing all processes of the unstable primary server to the spare server or the other primary server having spare capacity according to a currently set operation mode; and

    upon completing duplexing, providing the unstable server with a system rejuvenation control signal for executing rejuvenation.

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