A data deduplication methodology in which the blocks of data that are used to reduce the volume of bits required to represent information are of variable length and determined by patterns in the data being treated. Variable length deduplication generally sees higher rates of data reduction that fixed length methodologies.
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In the digital age, maximizing asset value often means using different storage tiers with different cost and access characteristics for data in different stages of its life.
Variable-length deduplication typically reduces disk backup capacity by more than 90% and allows existing networks to be used for automated DR protection.