System and method for performing a snapshot and for...

G - Physics – 06 – F

Patent

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G06F 12/16 (2006.01)

Patent

CA 2548542

The present invention relates to a method for tracking a plurality of snapshots of an information store (90). The present invention comprises performing a first snapshot of an information store (90) that indexes (120) the contents of the information store, copying the contents of the information store to a first storage device (115), using the first snapshot, and updating a replication volume table (102) indicating the storage of the contents of the first information store using the first snapshot on the first storage device. A second snapshot is performed of the information store that indexes the contents of the information store (90), the contents of the information store are copied to a second storage device using the second snapshot and the replication volume table (120) is updated to indicate the storage of the contents of the first information store using the second snapshot on the second storage device (115).

La présente invention concerne un procédé de poursuite d'une pluralité de copies instantanées d'une mémoire d'informations. Ledit procédé consiste à réaliser une première copie instantanée d'une mémoire d'informations qui indexe les contenus de ladite mémoire, à copier les contenus de ladite mémoire sur un premier dispositif de stockage, à utiliser la première copie instantanée, et à mettre à jour un tableau de volume de réplication indiquant le stockage des contenus de la première copie instantanée au moyen de la première copie instantanée au niveau du premier dispositif de stockage. Une seconde copie instantanée de la mémoire d'informations est effectuée, ladite mémoire indexant les contenus de ladite mémoire. Les contenus de la mémoire d'informations sont copiés sur un second dispositif de stockage au moyen de la seconde copie instantanée et le tableau du volume de réplication est mis à jour de manière à indiquer le stockage des contenus de la première mémoire d'informations, à l'aide de la seconde copie instantanée au niveau du second dispositif de stockage.

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