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Method and apparatus for managing file versions in an information processing system based on a predetermined amount of storage media

  • US 5,613,107 A
  • Filed: 12/20/1993
  • Issued: 03/18/1997
  • Est. Priority Date: 12/22/1992
  • Status: Expired due to Term
First Claim
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1. A method of managing a file in an information processing system having a plurality of storage media which each contain a version of said file and a version number associated therewith, said method being implemented by said information processing system and comprising the steps of:

  • determining, when said file is to be replaced with an updated version, whether all of said plurality of media are available;

    electing a reference version of said file from the available media of said plurality of media based on a predetermined criteria, said reference version having a first version number;

    writing said reference version in any and all of the available media which do not have said reference version, so that all of the available media have said reference version;

    assigning a second version number to said reference version that have all of the available media which is equal to either said first version number if all of the plurality of media are available or said first version number plus two units if at least one medium of said plurality of media is not available;

    writing said updated version of said file in all available media; and

    assigning a third version number to said updated version of said file on all available media which is equal to the second version number plus one unit.

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