Thanks so much Sebastian for your inputs. I made allocation pool as elastic.Lets say, i created a demo7 VDC with below settings. 12 GHZ = 12 vCPU.
I was not created any VMs under this Demo7 VDC.If i want to create any new VMs,lets say 6 VMs * 2 vCPU,then it will allow us to create as the allocation pool is elastic(eventhough the CPU resources guaranteed as 10 %).When Im touching the CPU usage at 1.20 GHZ(lets say 2 VMs are on now),then i cannot power on any other VMs(rest 4 VMs).
Am i right?The same applies to memory as well.
In VDC:-
in vCenter server resource pool settings.
Thank you,
Manivel R