Cisco Call Manager/Unity Memory CPU reservation on UCS B series

[Michael Martin]

There has been instances where I am installing a Call Manager or Unity on a B series UCS server or a customer VMware environment. When trying to start the servers there is a message stating there are not enough resources. Once I decrease the resource reservation for CPU and memory the server starts.

Asking a data center engineer he says that I should leave the resources as they and let VMware manage the resources. I believe the voice servers should have the resources reserved.

I have checked the docwiki but cant find anything.

Is there documentation that states either way?

[Jaime Valencia]

If you change the reservation from what the OVA has, you lose Cisco support, the virtualization wiki clearly states that there should be a 1:1 map to vCPU Vs. cores and RAM Vs. vRAM

We DO NOT support oversubscription of resources.