Clone this, merge it with your config. There’s some hacky requirement on the NetApp api regarding the dtd needing to exist in /etc (iirc) so if you see errors about namespaces and such, copy the netapp_gx.dtd included here to /etc/netapp_gx.dtd on your opennms server and/or minions.
We authenticate using Basic auth, so you’ll need to update the Authorization header in xml-datacollection-config.xml to use the correct credentials, for all three collection groups.
In the Grafana subdirectory, there are graphs for:
Node Performance Statistics Vserver Performance Statistics Volume Performance Statistics Snapmirror Statistics
You will likely have to massage these to make them work in your environment, specifically the node filters and resource filters used.