Per the docs, 'vserver fpolicy policy external-engine create' should allow multiple -primary-servers. But I can't seem to get it to work. The command works (rather, doesn't error out), but 'vserver fpolicy policy external-engine show" only ever shows 1 server, the first in the list I made.
The auditing software (Varonis) requires multiple. So this is holding us up from implementing.
https://docs.netapp.com/us-en/ontap/nas-audit/create-fpolicy-external-engine-task.html