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Can we enable dedupe on GCP volume that just moved?

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Applies to

  • GCP
  • ONTAP 9.10.1
  • Single Instance Data Logging (SIDL)

Answer

  • When SIDL is enabled on data aggregates, enabling inline dedupe or compression will cause performance issues since CPU cycles needed for SIDL.
  • SIDL is enabled for increase of write performance by skipping NVRAM and writing data only once onto disk directly.

Additional Information

To check the SIDL status, from Cluster CLI run command aggregate show -aggregate <<aggregate_name> and check the Enable SIDL key

Example:
::> aggregate show -aggregate aggr2                   
                                                [...]
                                       Enable SIDL: on
                                         Composite: false
                            Is FabricPool Mirrored: false
                           Capacity Tier Used Size: 0B
                 Space Saved by Storage Efficiency: 0B
   Percentage of Space Saved by Storage Efficiency: 0%
Amount of Shared bytes count by Storage Efficiency: 0B
                   Inactive Data Reporting Enabled: false
                    azcs-read-optimization Enabled: false
                 Enable Aggregate level Encryption: false
                Aggregate uses data protected SEDs: false

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