An event is any change to an object defined by a change in the metrics for that object. You can compare changes to an object with symptoms and other data to identify a possible cause for a generated alert.

How the Events Tab Works

If you arrive at the Events tab from the Alerts page or tab, the Events tab opens with the timeline centered on the moment the alert occurred for the selected object.

You can configure the chart to display various combinations of data, allowing you to identify events that contribute to the alert you are investigating. Use the range selectors to shift the larger time frame in the timeline, then click and drag on the graph area to zoom in on a specific period. Click the data points on the graph to see pop-up descriptions of the various events.

Click the Actions menu to open an external application, for example, vSphere Client.

Where You Find the Events Tab

  • From the left menu, click Environment, then select a group, custom data center, application, or inventory object. Click the object to display the object's Summary tab. Click the Events > Events tabs.
  • In the menu, select Search and locate the object of interest. Click the object to display the object's Summary tab. Click the Events > Events tabs.
  • From the left menu, click Troubleshoot > Alerts, then click an alert of interest to display the alert details on the right. Click View events. The object that triggered the alert is displayed with associated events.
Table 1. View From
Option Description

Shows or hides events for the current object.


Shows or hides events for objects like the impacted object.

Parents <options>

Shows or hides events for the parent, grandparent, and so on, objects of the current object.

Children <options>

Shows or hides the events for the descendants of the impacted object.

Table 2. Alert Filters
Option Description
Criticality <options>

Limits the alerts to those matching the selected criticality level. If no criticality is selected, all alerts are displayed.

Status <options>

Limits the alerts in the chart to the canceled or active alerts. If no status is selected, all alerts are displayed.

This option applies only to alerts, not to fault and change events. Change events and active faults are always displayed in the chart.

Alert Type <options>

Select one or more alert types. The types are assigned when the alert is defined. If no type is selected, all alerts are displayed.

Table 3. Event Filters
Option Description
Dynamic Threshold Violation

VMware Aria Operations calculates dynamic thresholds for each metric that is collected for an object based on policies set.

Hard Threshold Violation Events that represent a hard threshold violation, based on policies set. The system analyses the number of metrics that are violating their hard thresholds to determine trends.
Data Availability Events reflecting datastore performance. Data availability is the capacity to provide data on demand to users and applications.
System Degradation Events that reflect negative impacts on system performance.
Environment Events indicating a change in the environment.

Shows or hides the change events. Change events are changes to the object that might or might not result in an alert.

Notification Routine notification events.
Fault Events indicating any observed behavior that differs from the expected one.
Table 4. Date Controls, Events Chart, Events Data Grid
Option Description
Date Controls

Limits the data in the chart to the selected time frame.

Events chart

Shows the events and alerts over time by criticality, and other data options you select in the toolbar.

Events data grid

Shows a list of events when you select at least one of the following display options:

  • Self
  • Parent
  • Child
  • Peer