Administrator Guide

Creating Threshold Definitions to Recommend Volume Movement
Create a threshold definition to recommend volume movement based on the rate of Storage Center front-end IO, volume
latency, Storage Center controller CPU usage, or percentage of storage used for a Storage Center.
Create a Threshold Definition to Monitor Front-End IO for a Storage Center
When Storage Center front-end IO 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 front-end IO.
a. From the Type drop-down menu, select IO Usage.
b. From the Alert Object Type drop-down menu, select Storage Center.
c. From the Alert Definition drop-down menu, select FE IO/Sec.
6. (Optional) Select the All Objects check box to apply the threshold definition to all Storage Centers
7. Configure the IO/sec value that must be exceeded to trigger an error threshold alert with a volume movement
recommendation.
a. In the Error Setting field, type the rate of IO/sec 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. Select the check box for each Storage Center that you want to monitor with the threshold definition, then click Finish. The
Create Threshold Definition dialog box closes.
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.
Threshold Alerts
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