D
Deduplication
Definition
Data deduplication is a data reduction technique that eliminates duplicate copies of data, storing only unique data blocks and referencing them as needed. Inline dedup processes data before writing to disk, while post-process dedup runs after data is stored. Deduplication can reduce storage consumption by 5-20x for backup workloads and 2-5x for primary storage, and is a standard feature in modern all-flash arrays.
