The Summary tab that is associated with the other object tabs summarizes Heath, Risk, and Efficiency alert badges for the selected object and displays the top alerts that lead to the current state. It also displays the top alerts for the descendants of the selected object in the current navigation hierarchy.
As an overview of alerts for an object, object group, or application, you use this tab to evaluate the affect that alerts are having on an object and to begin troubleshooting problems.
Summary Tab Alert Types
The Health, Risk, and Efficiency badge states are based on the number and criticality of the generated alerts for the selected object.
Health alerts indicate problems that affect the health of your environment and require immediate attention to ensure that service to your customers is not affected.
Risk alerts indicate problems that are not immediate threats but should be addressed in the near future.
Efficiency alerts tell you where you can improve performance or reclaim resources.
Summary Tab for an Object or an Object Group
When you are working with a single object, the Top Alerts are the alerts generated for the object and the Top Alerts for Descendants are the alerts generated for any child or other descendant objects in the currently selected navigation hierarchy. For example, if you are working with a host object in the vSphere Host and Clusters navigation hierarchy, descendants can include virtual machines and datastores.
When you are working with object groups, which can include one object type, such as hosts, or multiple objects types, such as hosts, virtual machines, and datastores, all the group member objects are descendants of the group container. The most critical generated alerts for the member objects appear as Top Alerts for Descendants.
For an object group, the only Top Alerts that might be generated are the predefined group population alerts. A group population alert considers the health of all group members and is triggered if the average health is above the Warning, Immediate, or Critical threshold. If a group population alert is generated, then the badge score and color is affected by the alert. If a group population alert is not generated, then the badges are green. This behavior is because an object group is a container for other objects.
Summary Tab and Related Hierarchies
The alerts that appear on the Summary tab for an object can vary depending on the currently selected hierarchy in the Related Hierarchies in the left pane.
Depending on the selected hierarchy, you see different alerts and relationships on the Summary tab for an object. The current focus object name is on the center pane title bar, but the descendent alerts depend on the relationships that the highlighted hierarchy defines in the Related Hierarchies list in the upper left pane. For example, if you are working with a host object relative to virtual machines in the vSphere Hosts and Clusters hierarchy, then descendants commonly include virtual machines and datastores. But if you are working with the same host as a member of an object group, then any alerts on virtual machines that are also members of the group do not appear because the host and the virtual machines are considered children of the group and peers among each other. In this example, the focus of the Summary tab is the host in the context of the group, not the vSphere Hosts and Clusters hierarchy.
Summary Tab Evaluation Techniques
You can evaluate the state of objects, starting with the Summary tab, by using one or more of the following techniques.
Select an object or object group, click on the alerts on the Summary tab, and resolve the problems that the alert indicates.
Select an object and examine the information about the current object that is provided in the other tabs. For example, you start on the object Summary tab and compare the generated alerts to the analytic information about the object on the Analysis tabs.
Select an object, review the alerts on the Summary tab, and select other objects, comparing the volume and types of alerts generated for different objects.