Deduplication best practices and choosing the best dedupe technology

Data deduplication is a technique to reduce storage needs by eliminating redundant data in your backup environment. Only one copy of the data is retained on storage media, and redundant data is replaced with a pointer to the unique data copy. Dedupe technology typically divides data sets in to smaller chunks and uses algorithms to assign each data chunk a hash identifier, which it compares to previously stored identifiers to determine if the data chunk has already been stored. Some vendors use delta differencing technology, which compares current backups to previous data at the byte level to remove redundant data.

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