Eric Sloof(1, 2, 3) already explored the new “alarms and actions” capabilities. There’s one that really stands out in my opinion in the next release of ESX/vCenter(vSphere):
Indeed, “Enter maintenance mode“. Now you might wonder when you would want to use this. Wouldn’t it be nice that when your hardware is degraded, for instance memory status [...]





vSphere 4.0 Quick Start Guide