Introducing
vCenter Operations Manager Features
and Concepts 1
vCenter Operations Manager collects performance data from monitored software and hardware resources in
your enterprise and provides predictive analysis and real-time information about problems. It presents data
and analysis through alerts, in configurable dashboards, on predefined pages in the user interface, and in
several predefined reports.
Before you start using vCenter Operations Manager, become familiar with key vCenter Operations Manager
features, concepts, and terminology.
This chapter includes the following topics:
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“Viewing Resources in vCenter Operations Manager,” on page 7
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“Understanding How vCenter Operations Manager Collects Data,” on page 8
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“Understanding Alerts,” on page 8
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“Understanding Health Ratings,” on page 10
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“Monitoring Virtual Resources,” on page 11
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“Analyzing Performance and Capacity,” on page 13
Viewing Resources in vCenter Operations Manager
In vCenter Operations Manager, a resource is an entity in your computing environment for which
vCenter Operations Manager collects data. A resource can be a single entity, such as a router or database, or
a container that holds other resources.
Applications and tiers are types of container resources. An application defines an interdependent set of
hardware and software components. A tier is a group of resources that performs a specific task in an
application. An application can contain multiple tiers. With applications and tiers, you can combine, track, and
analyze metrics for related resources over a period of time.
To make resources easier to find in the user interface, a vCenter Operations Manager administrator assigns
resources to resource tag values. A resource tag is a type of information, and a resource tag value is an
individual instance of that type of information.
You can view resources in many places in the vCenter Operations Manager user interface, including the
Environment Overview page. The list on the left side of the Environment Overview page contains the resource
tags and resource tag values. The List tab contains the resources.
In the example, the resource tag value called VMware vCenter Operations is selected in the left pane under
the Application resource tag, and the List tab shows the resources assigned to the VMware vCenter Operations
resource tag value. The resources are tiers in the VMware vCenter Operations application.
VMware, Inc.
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