Data deduplication with reduced hash computations

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United States of America Patent

PATENT NO 9858141
SERIAL NO

15438287

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Abstract

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Techniques for data deduplication in a data storage system include comparing a first attribute of a received data page to first attributes of one or more stored data pages. In response to the first attribute matching one of the first attributes, a second attribute of the received data page is compared to second attributes of the one or more data pages. In response to the second attribute of the received data page matching one of the second attributes, a fingerprint of the received data page is compared to fingerprints of the one or more data pages. In response to the fingerprint of the received data page matching one of the fingerprints, the received data page is discarded and replaced with a reference to the corresponding data page already stored in the storage system. In response to first attribute, the second attribute, or the fingerprint of the received data page not matching, the received data page is stored.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fisher, Timothy J Cypress, US 91 1180
Ioannou, Nikolas Zurich, CH 126 1213
Parnell, Thomas Zurich, CH 69 597
Pletka, Roman A Zurich, CH 108 1874
Tomic, Sasa Kilchberg, CH 101 1080

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