Administrator Guide

Table Of Contents
Recommendations Based on Volume Latency
If the recommendation was triggered by a threshold definition that monitors volume latency, the Recommend Storage Center
dialog box displays a recommendation to move a specific volume to a specific Storage Center.
Figure 70. Recommended Storage Center Dialog Box
If Storage Manager identified a possible reason for the increased volume latency, the reason is displayed in the Recommend
Reason field. 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 definition 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 specific volumes to move or populating the Recommended
Reason field.
Figure 71. Recommended Storage Center Dialog Box
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Threshold Alerts