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SnapMirror Network Integrity Checker

Having just upgraded to OnTAP 9.1 from 8.3.2, I noticed the following in the Release Notes:

 

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Support for SnapMirror Network Integrity Checker
Beginning with ONTAP 9, network integrity checks are available for SnapMirror network operations.
This feature strengthens the existing detection of on-wire corruption. In the event of on-wire
corruption, the transfer will be aborted with an error message.
This feature comes enabled, by default, between two systems running ONTAP 9.

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I then searched for the exact phrase "SnapMirror Network Integrity Checker" and can't find any details anywhere on the NOW site. Does anyone know how this feature works, how to check the status, etc. ?