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Distributed device status in a clustered system environment

  • US 5,600,791 A
  • Filed: 06/20/1995
  • Issued: 02/04/1997
  • Est. Priority Date: 09/30/1992
  • Status: Expired due to Fees
First Claim
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1. An apparatus for communicating error and status information, said apparatus comprising:

  • first, second, and third computer systems, said first, second, and third computer systems being interconnected via a shared bus;

    first, second, and third system managers, said first system manager residing on said first computer system, said second system manager residing on said second computer system, and said third system manager residing on said third computer system;

    a primary IOP manager and first and second secondary IOP managers, said primary IOP manager residing on said first computer system, said first secondary IOP manager residing on said second computer system, and said second secondary IOP manager residing on said third computer system;

    a plurality of IOPs, each of said plurality of IOPs being capable of communicating said error and status information to said first, second, and third computer systems;

    means for communicating said error and status information from a first IOP to said primary IOP manager, said first IOP being one of said plurality IOPs;

    means for communicating said error and status information from said primary IOP manager to said first system manager;

    means for communicating said error and status information from said primary IOP manager to said first secondary IOP manager and said second secondary IOP manager, said error and status information being communicated via said first IOP; and

    means for communicating said error and status information from said first secondary IOP manager to said second system manager and means for communicating said error and status information from said second secondary IOP manager to said third system manager.

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