Hi AshokV,
We call idle VMs "zombie VMs" in VKernel vOPS Server Standard. You can see all the ones that exist in your environment in one screen (See the attached screenshot on how to get to them). These idle/zombie VMs can be automatically powered-off as well. More information on the functionality here. Don't hesitate to reach out if you need more information - arosemblat@vkernel.com.
Alex Rosemblat
Product Marketing Manager
VKernel
A Quest Company