| 摘要 |
One embodiment of the present invention is directed to a multi-node data-storage system, including a number of component-data-storage-system nodes, which stores data objects, each data object stored as a mirrored portion and an additional portion and a snapshot-operation-triggering mechanism that invokes a snapshot operation on a data object in which mirrored data stored in the mirrored portion of the data object is transformed into data stored in non-mirroring redundant data storage associated with a next snapshot level within the additional portion of the data object. An additional embodiment of the present invention is directed to a multi-node data-storage system in which a snapshot-operation-triggering mechanism automatically invokes a snapshot operation on a data object.
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