HP P420 SIM

Hi All, 

I have a P420 raid controller providing local storage to a machine running ESXi 6 and another P420 raid controller running on a Windows server 2012 r2 machine. Both are custom built using various hardware for a home lab
I have just installed HPE systems Insight manager to add both controllers for setting up SMTP disk alerts however I can't seem to locate them when using the discovery - can someone point me in the right direction for this?
Thanks