vCenter Server contains several predefined alarms, but there is an option to define your custom alarms as well. This feature is sometimes overlooked, although it provides a comprehensive option to better monitor your vSphere environment.
Default alarms are enabled by default, but you have an option to disable a particular alarm if needed. You can check the exact configuration of the alarm. Alarms are defined at the vCenter level. To access the configuration, select your vCenter Server and, from the Monitor tab, switch to the Alarm Definitions option, as shown in the following screenshot:
To create a custom alarm, perform ...