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Limitations of FlexCache volumes

You can have a maximum of 100 FlexCache volumes on a storage system. In addition, there are certain features of Data ONTAP that are not available on FlexCache volumes, and others that are not available on volumes that are backing FlexCache volumes.

You cannot use the following Data ONTAP capabilities on FlexCache volumes (these limitations do not apply to the origin volumes):

If your origin volume is larger than 16 TB, the output of the df command on the caching system will show "---" for the size information about the origin volume. To see the size information for the origin volume, you must run the df command on the origin system.

You cannot use the following Data ONTAP capabilities on FlexCache origin volumes or storage systems without rendering all of the FlexCache volumes backed by that volume or storage system unusable:
Note: If you want to perform these operations on an origin system, you can destroy the affected FlexCache volumes, perform the operation, and re-create the FlexCache volumes. However, the FlexCache volumes will need to be repopulated.