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Data Deduplication Methodologies: Byte-level vs. Block Level Deduplication
by ExaGrid Systems, Inc.

Though data de-duplication technologies have been around for years, there is a renewed focus on them recently as they are being utilized by products in the disk-based backup market. Data deduplication enables disk to be a feasible long-term retention backup media--making it the same or lower cost than tape-based systems.

This paper discusses the 4 key reasons why ExaGrid’s byte-level data de-duplication outperforms in-line block-level data de-duplication in a disk-based backup system. Exa...
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