A Guide to Using Deduplication

Deduplication has been one of the hottest technologies in the storage industry for almost three years. This Computer Technology Review guide offers important questions for IT managers to ask as they consider deploying deduplication in a midrange data center.

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"Generally, deduplication is a method for finding redundant data at a sub-file level, and substituting a pointer for the repeated data. It can be used to reduce disk requirements as well as the bandwidth needed to transmit data.

"There are several different and legitimate ways of doing that—block level deduplication is the most typical, but some products find differences between file-sets at a byte level. Different approaches may have implications for performance, the amount of working space required, how easily they can support different software applications, and ease of setting up replication. The specific approach is less important than proven results and how well the approach matches with the problem you are trying to solve."

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