Working with Performance Charts

Alarms are a great tool for alerting you of specific conditions or events, but they don't provide the detailed information that you sometimes need, such as a resource being used that is still under a warning or critical state. This is where vCenter Server's performance charts come in. vCenter Server has many features for creating and analyzing charts. Without these charts, analyzing the performance of a VM would be nearly impossible. Installing agents inside a VM will not provide accurate details about the server's behavior or resource consumption because a VM is configured with virtual devices. Only the VMkernel knows the exact amount of resource consumption for any of those devices because it acts as the arbitrator between the virtual hardware and the physical hardware. In most virtual environments, the VM's virtual devices can outnumber the actual physical hardware devices, necessitating the complex sharing and scheduling abilities...