Terms you need to know:
Alarms : Alarms are notifications generated based on some condition or criteria called Thresholds.
Threshold : Threshold is a predefined set of values based on which an alarm is generated.
Actions : Actions are tasks to be performed when alarms are generated E.g., Send EMail, SMS etc.,
There are Four severity levels for the alarms and they are
Critical , Warning , Clear and Unknown
Alarms are generated based on
1. Availability of the monitor - represents whether the particular
monitor is up or not. It has two states of severity - UP / DOWN
3. Attributes (Numeric & String attributes) - Alarms will be generated, if the threshold profile condition set for these attributes is met. eg., alarm will be generated if threshold of the attribute - cpu utilization crosses 75%