Administrator Guide
Recommendations Based on Volume Latency
If the recommendation was triggered by a threshold denition that monitors volume latency, the Recommend Storage Center dialog box
displays a recommendation to move a specic volume to a specic Storage Center.
Figure 82. Recommended Storage Center Dialog Box
If Storage Manager identied a possible reason for the increased volume latency, the reason is displayed in the Recommend Reason eld.
Once the Recommend Reason is calculated, it is not updated for a 24-hour period. If you view the recommendation after 24 hours have
elapsed, the reason is recalculated. If Storage Manager is unable to determine a reason, no reason is provided.
The following reasons can be displayed:
• CPU- Indicates that CPU usage for the controller that hosts the volume is high.
• IO Count: Indicates that IO for the Storage Center that hosts the volume is high.
• Disk Latency: The disks that provide storage for the volume are experiencing high latency.
• Tier 1 Space: Tier 1 storage space is full or nearly full for the Storage Center that hosts the volume.
The Convert to a Live Volume to move to recommended Storage Center or Live Migrate the volume to the recommended Storage
Center link opens a dialog box that allows you to move the volume automatically to the recommended Storage Center by converting it to a
Live Volume or creating a Live Migration.
Recommendations Based on Other Thresholds
If the recommendation was triggered by a threshold denition that monitors Storage Center front-end IO, Storage Center controller CPU
usage, or the percentage of storage used for a Storage Center, the Recommend Storage Center dialog box displays a recommended
Storage Center without suggesting specic volumes to move or populating the Recommended Reason eld.
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Storage Center Threshold Alerts