I have recently been able to get vSAN properly up and running in my lab and took a look at the OOTB Dashboards that come with the MPSD (Management Pack for Storage Devices).
As I have a hybrid build (I know many have All Flash Arrays) I was interested in how hard my Flash Cache was working so I built a dashboard purely focused on this aspect of the vSAN product.
It is a simple dashboard but has what I think is useful information.
Feedback and questions very welcome.