Flexible remote data mirroring

G - Physics – 06 – F

Patent

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Details

G06F 11/00 (2006.01) G06F 11/20 (2006.01)

Patent

CA 2449984

Methods, systems, and configured storage media are provided for flexible data mirroring. In particular, the invention provides local-remote role reversal (1506), implementation of hot standby server status through a "media not ready" signal (1508), several alternate buffer contents and buffering schemes, transactioning (1516), many-to-one mirroring through use of "virtual" remote mirroring units (1520), identification (1522) of frequently accessed data withbout application-specific knowledge but based instead on an application's logged and analyzed behavior, and use (1526) of the secondary server in a non- authoritative manner.

Cette invention se rapporte à des procédés, à des systèmes et à des supports de stockage configurés pour un miroitage flexible des données. Cette invention permet en particulier une inversion de rôle local-distant (1506), la mise en oeuvre d'un serveur en état de secours automatique par l'intermédiaire d'un signal "support pas prêt" (1508), plusieurs contenus de tampons alternatifs et plusieurs schémas de tamponage, l'établissement de transactions (1516), le miroitage de plusieurs à un grâce à l'utilisation d'unités de miroitage à distance "virtuelles" (1520), l'identification (1522) des données fréquemment demandées sans connaissance spécifique de l'application, mais plutôt sur la base d'un comportement analysé et consigné de l'application, et l'utilisation (1526) du serveur secondaire dans un mode non autoritaire.

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