Methods and apparatus for continuous data protection system having journal compression

Methods and apparatus for continuous data protection system having journal compression

Method and apparatus to compress journal data in a continuous data protection system. An exemplary embodiment includes storing journal data including a do data stream and an undo data stream in a continuous data protection system, compressing data prior to entry in the do data stream, storing compre...

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Hauptverfasser: Ahal, Shlomo, Natanzon, Assaf
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creator Ahal, Shlomo
Natanzon, Assaf
description Method and apparatus to compress journal data in a continuous data protection system. An exemplary embodiment includes storing journal data including a do data stream and an undo data stream in a continuous data protection system, compressing data prior to entry in the do data stream, storing compression information in a do metadata stream for the do data stream entry, accessing the data for the entry in the do data stream, examining the do metadata stream for the entry, and decompressing the do data stream entry and writing the decompressed data to storage.
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An exemplary embodiment includes storing journal data including a do data stream and an undo data stream in a continuous data protection system, compressing data prior to entry in the do data stream, storing compression information in a do metadata stream for the do data stream entry, accessing the data for the entry in the do data stream, examining the do metadata stream for the entry, and decompressing the do data stream entry and writing the decompressed data to storage.</abstract><oa>free_for_read</oa></addata></record>
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title Methods and apparatus for continuous data protection system having journal compression
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