The VM uptime dashboard will keep track of any VMs that are currently down but has an uptime of more than 80% of the time for the last 30 days.  A production VM should be up a majority of the time, therefore giving an uptime of over 80% for 30 days will eliminate a lot of VMs that are used for temporary testing, powered off majority of the time, VM templates, etc. 

Instructions

1. You will need to install and active the uptime supermetric which you can download here first https://code.vmware.com/samples?id=7421
2. Next download and install the dashboard and view
3. For Instructions on how to use the dashboard.  Visit http://www.vmignite.com/2020/11/download-vm-uptime-dashboard-for-vrops-8-2/