File managing method, recording medium and computer system incorporating it

摘要

The method for managing a file comprises the updating of the file by unit incrementation of the index numbers of the successive versions of the file which are available on at least two media (S0-S4) and consists, during normal operation, in updating all the available media after electing a majority version (MV) and rewriting the majority version to the media which do not contain it and, following an unavailability of a medium, in updating all the available media after electing and rewriting the majority version and incrementing its index number by two units.