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Requirements for using Flash Pool aggregates

The Flash Pool aggregate technology has some configuration requirements that you should be aware of before planning to use it in your storage architecture.

Flash Pool aggregates cannot be used in the following configurations:

FlexShare is not supported for volumes associated with Flash Pool aggregates.

Read-only volumes, such as SnapMirror destinations, are not cached in the Flash Pool cache.

If you are not mirroring the Flash Pool and it is not used for a MetroCluster configuration, you should disable automatic aggregate Snapshot creation for the Flash Pool. You do this by using the aggr options nosnap command. For information about automatic aggregate Snapshot copy creation, see the Data ONTAP System Administration Guide for 7-Mode.

Flash Pool aggregates can be created from mirrored aggregates; however, the SSD configuration must be kept the same for both plexes.

For a list of the platforms that support Flash Pool aggregates, and minimum numbers of SSDs, see the Hardware Universe.

If you create a Flash Pool aggregate using an aggregate that was created using Data ONTAP 7.1 or earlier, the volumes associated with that Flash Pool aggregate will not support write caching.

For more information about the types of workloads and resource constraints that benefit from using Flash Pool aggregates, see Technical Report 4070: NetApp Flash Pool Design and Implementation Guide.