Before setting up the agents, confirm the connection between the SCOM agents and ESI Service:
On the SCOM Agent computer, open this link: https://<ESI Service IP>:<https port>/esi/console/graph/Entities?class=StorageSystem. Replace <ESI Service IP> and <https port> with the applicable values.
Confirm that the load time displayed at the bottom of the page is less than one second. Repeat this step a few times for consistent results.