What are the different types of events in Active IQ Unified Manager?

Predefined events for different object types (Aggregate, Cluster, Node, Volumes, etc.)
Two types of built-in events
- Health Events
  - Automatic notifications triggered by predefined conditions or when an object's health reaches a threshold
  - They help prevent performance issues and system unavailability. Events are classified by impact area (availability, capacity, configuration, or protection) and assigned a severity and impact level to determine the urgency of action needed
- Performance Events
  - Incidents related to workload performance on a cluster and can help identify workloads with slow response times
Unified Manager treats repeated occurrences of the same event as a single event
A full list can be found here

Events that are discovered by Unified Manager through Active IQ
Created by applying rules to AutoSupport messages from monitored storage systems
Unified Manager automatically checks and downloads new rules for clusters after midnight
- For sites with no external network access, upload rules manually from Storage Management > Event Setup > Upload Rules
These events usually pertain to cluster risks and may offer fix options or suggested actions
Event details include the rule ID being checked
Click here for more information

Administrators can use EMS subscription to monitor storage events not included in the built-in events
- Unified Manager has hundreds of built-in events, whereas ONTAP has several thousand EMS events
EMS subscription allows configuration of Unified Manager to receive specific EMS events from clusters in real-time
Unified Manager polls on 15-minute intervals which may cause a delay in processing built-in events
EMS events are broken up into two categories
- Automatically Subscribed Events
  - Automatically enabled when a cluster is added to Unified Manager
  - The cluster notifies Active IQ Unified Manager about these events through REST notifications over port 9443
  - The events appear in the format "<Severity> EMS Received," and more details can be viewed by drilling down into the event details
  - See all automatically subscribed events
  Manually Subscribed Events
  - Events that storage administrators may want to set up alerts for, but they are not part of the built-in or automatically subscribed events
  - The cluster notifies Unified Manager about these events through Syslog over UDP port 514.
  - The events appear in the format "<Severity> EMS Received," and more details can be viewed by drilling down into the event details
  - How to configure and receive alerts from ONTAP EMS Event Subscription in Active IQ Unified Manager