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Vserver : Storage > Volumes : Understanding volumes : Configuring deduplication
Configuring deduplication
Deduplication is a Data ONTAP feature that reduces the amount of physical storage space required by eliminating duplicate data blocks within a FlexVol volume or an Infinite Volume. You should not enable deduplication on the root volume.
You can decide to deduplicate only the new data that is written to the volume after enabling deduplication or both the new data and the data existing in the volume prior to enabling deduplication.

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