VirtualCenter Monitoring and Performance Statistics

VMware Infrastructure 3 includes a system for gathering extensive metrics on performance, resource utilization, and basicstatistics of all parts of the environment, including virtual machines, ESX Server hosts, resources pools, and host clusters.These metrics can be viewed using the VI Client, and are also available to external programs via the VMware InfrastructureSDK. All measurements may be obtained in real-time, or from a historic record.

The real-time metrics are obtained by connecting directly to the source of the data and transmitting the desiredmeasurements as they are collected. The metrics are collected every 20 seconds for ESX Server 3 hosts, and every 60 secondsfor ESX Server 2 hosts. They can be viewed through a VI Client session with VirtualCenter or directly with an ESX Serverhost; in the latter case, only metrics pertaining to that host or the virtual machines on it are available.

The historical metrics are drawn from the VirtualCenter database, and can only be viewed with a VI Client connected to theVirtualCenter server, or a program that uses the VMware Infrastructure SDK. VirtualCenter aggregates the value of eachmetric over successively larger time intervals, using smaller intervals to generate values which are then rolled up into largerintervals, using either an average, summation, latest, maximum or minimum value over the interval.

Monitoring Statistics datasheet -http://www.vmware.com/pdf/vi3_monitoring_statistics_note.pdf

For more information - Virtual Center clink on the links below -

http://www.1st-computer-networks.co.uk/vmware-virtualcentre.htm OR

http://www.vmware.com/pdf/vc_datasheet.pdf

Monitoring using VCC