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How does Astra Trident work with ONTAP FlexGroup volumes?

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Applies to

  • Astra Trident
  • ONTAP FlexGroup

Answer

  • A FlexGroup volume is a single namespace that is made up of multiple constituent/member volumes.
  • Trident uses Rest API /storage/volumes for FlexGroup creation.
  • ONTAP recommends auto-provision option which picks all aggregates and Trident is designed to follow the same in both ZAPI and REST approach currently.
    • The minimum recommended FlexGroup constituent/member volume size is 100G
      Constituents/members per aggregate is 4, and 8 if it is AFF A700 and AFF A800
      Hence, The minimum recommended FlexGroup size is 100Gi * <4|8> * <number of aggregates>
  • If this auto-provision option is not suitable, ONTAP suggests the manual approach by altering aggr-list and aggr-list-multiplier parameters.
  • Another option is to create the FlexGroup outside of Trident with the desired configuration and then to import that FlexGroup into Trident.

Additional Information

NetApp ONTAP FlexGroup volumes- Best practices and implementation guide

 

 

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