Somebody at VMware has just published an informal (but nicely edited) video showing in action the experimental feature Distributed Power Management (DPM) that the company introduced with VI 3.5.
It shows how four physical servers are powered on, one after another, during the day to address the increasing workload demand, while VirtualCenter manages to distribute over 100 virtual machines among them.
At 5pm, when most of the corporate workforce goes away, the VMs are moved back to the first server and DPM turns off the other three servers.
If you never saw the thing in action it may worth a look:
