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Description of secondary space management tasks

The Secondary Space Management wizard enables one or more types of tasks, based on the storage system configuration and capacities, dataset configuration, protection and provisioning policy requirements, and vFiler unit configuration of the volumes contained in the selected aggregate.

Delete backups and/or Snapshot copies
This option deletes selected backups and Snapshot copies on the selected volumes.
The option is enabled for volumes in primary storage and volumes in secondary storage that are destinations for SnapVault or qtree SnapMirror relationships. This option is not enabled for volumes that are destinations for volume SnapMirror relationships because the volumes are read-only.
Resize
This option increases or decreases the size of a volume, within the capacity of the aggregate. For imported volumes with a space guarantee setting, decreasing the size of the volume can reclaim space when the volume capacity is under utilized.
The option is enabled for volumes in primary storage and volumes in secondary storage that are destinations for SnapVault or qtree SnapMirror relationships.
For volumes in secondary storage that are destinations for volume SnapMirror relationships, you can only change the actual size of the volume, which is the size specified when the volume was created.
Deduplication
This option performs deduplication of the data on the selected volumes.
The option is enabled only for volumes in primary storage.
Migrate
This option migrates volumes in secondary or tertiary storage from the selected aggregate to another aggregate.
Note: This option migrates physical volumes in secondary or tertiary storage. In contrast, dataset migration migrates the primary node of a dataset (in primary storage).
The option is enabled for volumes that meet the volume migration criteria.