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Deduplication configuration requirements

You must ensure that the storage systems on which SAN or NAS containers reside meet certain requirements before you enable deduplication for them.

To support deduplication, managed storage systems must meet the following configuration requirements:
Attention:
  • Scheduled deduplication is not supported on SnapVault or volume SnapMirror destinations.
  • If deduplication is enabled on a volume on which Autogrow and Snapshot autodelete capabilities are enabled and fractional reserve is disabled, writes cannot be guaranteed on that volume.
  • To ensure against partial failure of SnapVault-based or Qtree SnapMirror-based backup operations from an over-deduplicated primary volume to a secondary volume of the same size, you can enable the global dpDynamicSecondarySizing option of the NetApp Management Console data protection capability in Operations Manager.

    Enabling the NetApp Management Console data protection capability for dynamic resizing of backup volumes allows a backup volume to dynamically resize its physical capacity in the event that the logical amount of over-deduplicated data being transferred from its primary volume exceeds the secondary volume's original physical size.

For more information about deduplication-supported maximum volume sizes on various storage systems running various versions of Data ONTAP, see the latest version of the NetApp Deduplication for FAS and V-Series Deployment and Implementation Guide (TR-3505).