Analyzing Capacity Utilization
The Prediction tab gives a dashboard-style visualization of the historical and future capacity utilization of clusters registered with Uplink. It shows how your storage capacity is utilized over time.
The historical data is used to make predictions about the capacity utilization of the various clusters in the future, along with the confidence interval, to show the percentage of confidence in the prediction. You can:
Select the type of storage capacity to display in the dashboard.
Drill down to directories and subdirectories in each cluster to view past and predicted capacity utilization values for each subdirectory
Notice
Prediction is only available for clusters running VAST Cluster 4.5 and later.
In the dashboard:
Callout | Description |
|---|---|
(1) | The current level of visualization shown as a drill-down path from All Clusters to a specific cluster and its subdirectories, for example: |
(2) and (3) | Historical (2) and future (3) capacity utilization in TB. Each color represents a cluster registered with Uplink or a directory on the selected cluster. In the graph:
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(4) | By default, historic capacity utilization at the All Clusters level is shown as a stacked histogram. Disable the Stacking option to unstack cluster visualization. |
(5) | The Cleanup Aware slider. If disabled, cleanups are not taken into account during capacity estimations. |
(6) | Select one of the Capacity Type options:
|
(7) | The circular chart provides the following information:
After you select a point of time in the left pane, this area changes to a graph visualizing the range of predicted capacity utilization values for each cluster or directory at that point of time.  For example, the top purple bar in the above graph means that the "purple" cluster will have capacity utilization from 393.814GB to 1034TB at the selected point of time.
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(8) | Date range sliders. The prediction is based on the range selected with the sliders. Use the sliders to exclude known anomalies from the prediction. |
(9) | A list of clusters (Cluster) or directories (Directory).
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(10) | Usage lists capacity utilization in slots depending on the selected time range. For very small ranges, the maximum granularity is three hours. For larger ranges, the granularity goes up to 12 hours as you move the cursor along the cluster or directory history curve or the projection trendline. |
(11) | Click Open subfolder to drill down to subdirectories under the current cluster or directory. To go back, click the location at the path displayed at the top of the page, for example: |
(12) | Click Path confidence indicators to view the confidence interval of the projection for future capacity utilization of the current path. The narrower the confidence interval band, the higher the confidence in the accuracy of the prediction. |
