Administrator Guide

Create a Threshold Denition to Monitor the Percentage of Used Storage for a Storage Center
When the Storage Center storage usage percentage exceeds the value set for the error threshold, Storage Manager triggers a
threshold alert with a volume movement recommendation.
1. Click the Threshold Alerts view.
2. Click the Denitions tab.
3. Click Create Threshold Denition. The Create Threshold Denition dialog box appears.
4. In the Name eld, type a name for the threshold denition.
5. Congure the threshold denition to monitor Storage Center storage usage.
a. From the Type drop-down menu, select Storage.
b. From the Alert Object Type drop-down menu, select Storage Center.
c. From the Alert Denition drop-down menu, select Percent Used.
6. (Optional) Select the All Objects check box to apply the threshold denition to all Storage Centers.
7. Congure the storage usage percentage that must be exceeded to trigger a threshold alert with a volume movement
recommendation.
a. In the Error Setting eld, type the storage usage percentage that must be exceeded.
b. Next to the Error Setting eld, in the Iterations before email eld, type the number of times the threshold must be
exceeded to trigger the alert.
8. Select the Recommend Storage Center check box.
9. Congure the other options as needed. These options are described in the online help.
10. When you are nished, click OK.
• If you selected the All Objects check box, the threshold denition is created and the Create Threshold Denition dialog box
closes.
• If you did not select the All Objects check box, the Add Objects dialog box appears.
11. Select the check box for each Storage Center that you want to monitor with the threshold denition, then click Finish. The
Create Threshold Denition dialog box closes.
Moving a Volume Based on a Recommendation
If the volume movement recommendation was triggered by a threshold denition that monitors volume latency, automatically move
the volume by creating a Live Volume or Live Migration. If the recommendation was triggered by a threshold denition that monitors
Storage Center front-end IO, Storage Center controller CPU usage, or the percentage of storage used for a Storage Center, move
the volume(s) manually.
1. Click the Threshold Alerts view.
2. Click the Alerts tab.
3. In the Current Threshold Alerts pane, locate the threshold alert that contains the volume movement recommendation. Alerts
that contain recommendations display
Yes in the Recommend column.
4. Right-click the threshold alert, then select Recommend Storage Center. The Recommend Storage Center dialog box opens.
• If the recommendation was triggered by a threshold denition that monitors volume latency, the dialog box displays a
Storage Center recommendation and allows you to move the volume by creating a Live Volume or Live Migration. If Storage
Manager identied a possible reason for the increased volume latency, the reason is displayed in the Recommend Reason
eld
• If the recommendation was triggered by a threshold denition that monitors Storage Center front-end IO, Storage Center
controller CPU usage, or the percentage of storage used for a Storage Center, the dialog box displays a recommended
Storage Center without suggesting specic volumes to move.
To act on the recommendation, record the Storage Center names displayed in the Current Storage Center and
Recommended Storage Center elds.
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Storage Center Threshold Alerts