There is a set of information made available by vCenter through the WebServices API that the vmware probe does not present by default. The collection of information is known as HostNumericServerInfo, or sometimes NumericServerInfo in the literature. This includes information about server fans, running temperatures, power supplies, etc. UIM does not present this for monitoring by default. There is a configuration hand-edit that can enable the data for monitoring. This document will explain how to enable these monitors. However, there are some reasons the monitors are disabled by default. That discussion will be considered first.