5.7

Example: Oversized and Undersized Virtual Machine Settings
The following examples show how some of the settings are used.
% oversized threshold
If the threshold is 70 percent, a virtual machine that has an average capacity
use of 60 percent is considered oversized. A virtual machine with an average
capacity use of 75 percent is not oversized.
% undersized threshold
If the threshold is 10 percent, a virtual machine that has an average capacity
use of 8 percent is considered undersized. A virtual machine with an average
capacity use of 45 percent is not undersized.
Modify the Criteria for Underused and Stressed Capacity
Underused and stressed capacity settings help you identify the load on clusters and hosts before you deploy
virtual machines.
An administrator can modify any policy in vCenter Operations Manager at any time. The changes that the
administrator applies affect all users. Therefore, the administrator must notify the users who are working with
vCenter Operations Manager about any new settings that are applied to the policies.
Prerequisites
Verify that you are logged in to a vSphere Client as an administrator, and vCenter Operations Manager is open.
Procedure
1 Click the Configuration link on the main vCenter Operations Manager page.
2 Create a new policy or open an existing policy for editing.
Option Description
To create a new policy
In the Manage Policies pane, click the Create Policy icon .
To modify an existing policy
In the Manage Policies pane, select the policy that you want to associate to
groups and click the Edit Policy icon .
3 Click 4c Underuse and stress and change the settings for underused and stressed rules.
Containers include World, vCenters, data centers, clusters, and hosts, but not groups or datastores.
Option Description
Containers are underused when:
Amount of CPU demand below
Considers the container underused when either of the following conditions
are met:
n
CPU use is less than the percentage of its allocated capacity as indicated
in this field.
n
Duration of CPU activity under the threshold compared to total time
evaluated meets the percentage Underused threshold.
Amount of memory demand below
Considers the container underused when either of the following conditions
are met:
n
Memory use is less than the percentage of its allocated capacity as
indicated in this field.
n
Duration of memory activity under the threshold compared to total time
evaluated meets the percentage Underused threshold.
Chapter 8 Set How Data Appears in vCenter Operations Manager
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