datadeduplication
nounUK /ˌdeɪtə diːˌdjuːplɪˈkeɪʃən/
US /ˌdeɪtə diːˌduːplɪˈkeɪʃən/
The process of finding and removing extra copies of the same information so it is stored only once.
The backup program uses datadeduplication to save space by keeping just one copy of each file.
RELATED WORDS
OTHER MEANINGS
2. A storage technique that keeps one unique copy of repeated data blocks to save disk space.
Datadeduplication cut the backup size in half by storing repeated blocks only once.
3. The cleanup step in data processing that merges records that describe the same thing.
Before analysis, datadeduplication merged the customer records that appeared twice.
4. A method used in networks to avoid sending the same data more than once.
The wide-area network uses datadeduplication to send only new pieces of files.