5.6

You set the percentage of affordable stress or underuse in the 4c Underused and stressed section of the Edit
Policy dialog box. A week contains 168 hours. Determine what percentage of those hours you can afford to
have high stress or low use in your environment.
For stress, even an hour or two per week might represent a problem because during that time the capacity is
almost exhausted.
You might want to be notified even if the environment is stressed by 1 percent.
1%*168 hours=1.68 hours
For underuse, determine how many hours a week you can afford to have some resources underused. The
calculations are identical.
Example: Calculating the Thresholds for Underused and Stressed Resources for Four Weekly Intervals
To set the thresholds for four weekly intervals, open the Configuration dialog box and click Manage Display
Settings. Set the Non-Trend Views Interval to Weekly and select 4 as the number of intervals to use.
Take into account that for a 4-week interval, 1 percent stress is calculated as follows.
1%=4*1.68 hours=6.72 hours
Example: Limiting the Thresholds for Business Days and Hours
To restrict the stress limit to 8 business hours, Monday to Friday, specify the hours and days in the 3c Usage
calculation section of the policy configuration dialog box. The underused and stressed values are calculated
as follows.
1%=40/168*1.68=0.4 hours a week.
Select Which Badges Generate Alerts
You can select the badges for which you want alerts to appear on the Alerts tab in
vCenter Operations Manager.
Alerts are generated when a badge changes its color based on the badge score metrics.
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 5 Configure Alerts and select the badges for which you want to generate alerts when their color
changes.
You can activate alerts for virtual machines, for other virtual infrastructure objects, and for groups.
VMware vCenter Operations Manager Getting Started Guide
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