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Manage aggregate-level inline deduplication on AFF systems

Contributors netapp-dbagwell netapp-aherbin
PDFs

Aggregate-level deduplication eliminates duplicate blocks across volumes belonging to the same aggregate. Beginning with ONTAP 9.2, you can perform aggregate-level deduplication inline on AFF systems. The feature is enabled by default for all newly created volumes and all upgraded volumes with volume inline deduplication turned on.

About this task

The deduplication operation eliminates duplicate blocks before data is written to disk. Only volumes with the space guarantee set to none can participate in aggregate-level inline deduplication. This is the default setting on AFF systems.

Note

Aggregate-level inline deduplication is sometimes referred to as cross-volume inline deduplication.
Step

  1. Manage aggregate-level inline deduplication on AFF systems:

    If you want to…​ Use this command

    Enable aggregate-level inline deduplication

    volume efficiency modify -vserver vserver_name -volume vol_name -cross-volume-inline-dedupe true

    Disable aggregate-level inline deduplication

    volume efficiency modify -vserver vserver_name -volume vol_name -cross-volume-inline-dedupe false

    Display aggregate-level inline deduplication status

    volume efficiency config -volume vol_name
Examples

The following command displays the aggregate-level inline deduplication status:

wfit-8020-03-04::> volume efficiency config -volume choke0_wfit_8020_03_0
Vserver:                                      vs0
Volume:                                       choke0_wfit_8020_03_0
Schedule:                                     -
Policy:                                       choke_VE_policy
Compression:                                  true
Inline Compression:                           true
Inline Dedupe:                                true
Data Compaction:                              true
Cross Volume Inline Deduplication:            false