Administrator Guide

About this task
Unisphere Central generates threshold alerts after Storage Usage checks usage metrics and notices a threshold definition has been
exceeded. Storage Usage runs daily at 12 AM by default.
Steps
1. If a Storage Center is selected from the drop-down list in Unisphere Central, click (Home).
The Unisphere Central Home page is displayed.
2. From the MONITORING menu, click Thresholds.
The Thresholds view is displayed.
3. Click the Definitions tab.
4. Click (New). The General page of the Create Threshold Definition wizard opens.
5. Enter a name for the threshold definition in the Name field.
6. Select the type of threshold definition to create from the Type drop-down menu.
• IO Usage: Read and write IO performance.
• Storage: Use and growth of storage.
• Replication: Status of replications.
7. Select the type of storage object to assign to the threshold definition from the Alert Object Type drop-down menu.
8. Select the type of usage metric to monitor from the Alert Definition drop-down menu.
9. (Optional) To assign the threshold definition to all of the storage objects that are of the type specified in the Alert Object Type,
select the All Objects check box.
The All Objects setting cannot be modified after the threshold definition is created.
10. (Optional) To configure the threshold definition to generate Volume Advisor recommendations to move one or more volumes to a
different Storage Center, select the Recommend Storage Center check box.
• The Volume Advisor functionality in Unisphere Central does not support moving volumes to a different Storage Center.
• The Recommend Storage Center checkbox is available only for threshold definitions that support Volume Advisor.
11. If the All Objects check box was not selected on the General tab:
a) Click Next.
The Add Storage Centers page is displayed.
b) Select the check boxes of the Storage Centers to add to the threshold definition.
12. Click Next.
The Settings page is displayed.
13. Specify the alert notification settings for the Error, Warning, and Inform thresholds:
• Error Settings: Enter the threshold value that the usage metric must exceed to trigger an Error threshold alert. To email Error
threshold alerts to the Unisphere Central administrators, select the Email check box. Then enter the number of concurrent events
that must occur to trigger an alert email.
• Warning Setting: Enter the threshold value that the usage metric must exceed to trigger a Warning threshold alert. To email
Warning threshold alerts to the Unisphere Central administrators, select the Email check box. Then enter the number of
concurrent events that must occur to trigger an alert email.
• Inform Settings: Enter the threshold value that the usage metric must exceed to trigger an Inform threshold alert. To email
Inform threshold alerts to the Unisphere Central administrators, select the Email check box. Then enter the number of concurrent
events that must occur to trigger an alert email.
NOTE:
Unisphere Central sends only one threshold alert email for every 24-hour period. The number of threshold
alert emails per 24-hour period cannot be configured. In addition, if the metric remains at or above the threshold
alert value, a second alert email is not sent. The metric must fall below the threshold value and then exceed the
threshold again to generate an alert email.
14. To specify which days of the week that Unisphere Central monitors the threshold definition:
a) Select the Day Constraint check box.
NOTE: The days of the week that the threshold definition is monitored are displayed in blue.
b) Click the days of the week to not monitor the threshold definition.
15. To specify the time that Unisphere Central monitors the threshold definition:
a) Select the Time Constraint check box.
b) Specify the start of the time period in the Start Time field.
c) Specify the end of the time period in the End Time field.
Storage Center Monitoring
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