Administrator Guide

Create a Threshold Definition to Monitor Latency for a Volume
When latency for a volume exceeds the value set for the error threshold, Storage Manager triggers a threshold alert with a volume
movement recommendation.
Steps
1. Click the Threshold Alerts view.
2. Click the Definitions tab.
3. Click Create Threshold Definition. The Create Threshold Definition dialog box appears.
4. In the Name field, type a name for the threshold definition.
5. Configure the threshold definition to monitor volume latency.
a) From the Type drop-down menu, select IO Usage.
b) From the Alert Object Type drop-down menu, select Volume.
c) From the Alert Definition drop-down menu, select Latency.
6. (Optional) Select the All Objects check box to apply the threshold definition to all volumes.
7. Configure the volume latency value that must be exceeded to trigger a threshold alert with a volume movement recommendation.
a) In the Error Setting field, type the volume latency that must be exceeded.
b) Next to the Error Setting field, in the Iterations before email field, type the number of times the threshold must be exceeded
to trigger the alert.
8. Select the Recommend Storage Center check box.
9. Configure the other options as needed. These options are described in the online help.
10. When you are finished, click OK.
• If you selected the All Objects check box, the threshold definition is created and the Create Threshold Definition dialog box
closes.
• If you did not select the All Objects check box, the Add Objects dialog box appears.
11. Choose the volumes that you want to monitor.
a) In the table, select the Storage Center that hosts the volumes.
b) Below the table, choose a method to select volumes:
• To apply the threshold definition to all volumes on a Storage Center, select All Volumes on Storage Center, then click
Finish. The threshold definition is added and the Create Threshold Definition dialog box closes.
• To apply the threshold definition to all volumes in a volume folder, select All Volumes in Folder/Container, then click Next.
The wizard advances to the next page and displays a table of volume folders.
• To apply the threshold definition to individual volumes on a Storage Center, select Select Volumes, then click Next. The
wizard advances to the next page and displays a table of volumes.
c) Select the check box for each volume or volume folder that you want to monitor with the threshold definition, then click Finish.
The threshold definition is added and the Create Threshold Definition dialog box closes.
Create a Threshold Definition to Monitor CPU Usage for a Controller
When the CPU usage percentage for a Storage Center controller exceeds the value set for the error threshold, Storage Manager triggers
a threshold alert with a volume movement recommendation.
Steps
1. Click the Threshold Alerts view.
2. Click the Definitions tab.
3. Click Create Threshold Definition. The Create Threshold Definition dialog box appears.
4. In the Name field, type a name for the threshold definition.
5. Configure the threshold definition to monitor Storage Center controller CPU usage.
a) From the Type drop-down menu, select IO Usage.
b) From the Alert Object Type drop-down menu, select Controller.
c) From the Alert Definition drop-down menu, select CPU Usage.
6. (Optional) Select the All Objects check box to apply the threshold definition to all Storage Center controllers.
7. Configure the Storage Center controller CPU usage percentage that must be exceeded to trigger an error threshold alert with a
volume movement recommendation.
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Threshold Alerts