Event Types

Different types of events can be defined to trigger alarms in different ways. The main types of events are:

Object Modified. With this type of event, an alarm is triggered on and off when an object property reaches specified values.

Examples:
- An alarm is triggered on when the cluster state is failing or failed, and then triggered off when the cluster state is active again.
- An alarm is triggered on when the attached property of an SSD turns false, and triggered off when it changes to true.
Threshold. These events trigger alarms when a property value crosses a specified threshold.

Examples (default):
- An alarm is triggered when NVRAM has 100 or more disk media errors.
- An alarm is triggered when cluster capacity is greater than or equal to 90 %.
Rate. These events trigger alarms if a property value exceeds a threshold within a given time frame.

Examples (default):
- An alarm is triggered when CNode memory is raised by more than 10% in 24 hours.
- An alarm is triggered when a CNode has over 100 PCI errors in a 12 hour period.