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Data redundancy elimination mechanism including fast lookup of data patterns exhibiting spatial locality

Image Number 5 for United States Patent #7834784.

A data redundancy elimination system. In particular implementations, a method includes accessing a data block; dividing the data block into a plurality of data chunks; computing chunk signatures for the plurality of data chunks; identifying a plurality of anchor chunks in the plurality of data chunks; accessing a second memory to identify one or more matching chunk signatures; reading one or more signature blocks corresponding to the matching chunk signatures from a first memory into the signature block search space of the second memory; and matching one or more computed chunk signatures to chunk signatures of the one or more signature blocks in the signature block search space.

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