Thanks for your reply.
There is a reference to this in the release notes for SnapCenter 2.0P1 ie https://mysupport.netapp.com/NOW/download/software/snapcenter/2.0P1/
1087151 [3B] - "Document SSL/TLS requirements for SnapCenter"
Occurance: SnapCenter has dependency on TLS v1.0 because of SnapCenter server's .NET 4.0 dependency. Disabling TLS 1.0 can cause communication failure between the server and the host.
Solution: The fix for removing the dependency on TLS 1.0 is going to be included in the next release of Snap Center.
We have tested connectivity with TLS1.0 enabled on the Server but we cannot alter the TLS1.2 only configuration on the NETAPP. Regarding of what TLS\ SSL\ Cipher configuration we use on the Server the issue persists. In all instances packet tracing shows no attempt at communication whatsoever. There is simply no data transfer out of the server from SnapCenter when we attempt to connect any Storage Device. There is also no traffic when HTTP is used.
Best regards, D