There are certain upgrade and revert considerations that you must know about before upgrading to a Data ONTAP release that supports passthrough-read or before reverting to a release that does not support passthrough-read.
After all nodes are upgraded to a version of Data ONTAP that supports FPolicy passthrough-read, the cluster is capable of using the passthrough-read functionality; however, passthrough-read is disabled by default on existing FPolicy configurations. To use passthrough-read on existing FPolicy configurations, you must disable the FPolicy policy and modify the configuration, and then reenable the configuration.
Before reverting to a version of Data ONTAP that does not support FPolicy passthrough-read, the following conditions must be met:
