The Performance Forecast for Hyper-V Storage report forecasts free space, latency and IOPS resource utilization for Hyper-V shared storage objects: Cluster Disks and Cluster Shared Volumes (CSV).
The report forecasts how many days remain before the level of resource utilization reaches the specified threshold values. The report allows analyzing the following storage resource utilization parameters: free space, maximum device latency and storage IOPS.
The report treats the Cluster Disk and CSV as separate objects with independent parameters. To avoid misunderstanding in the report output, note the following:
To calculate future storage performance, the report analyzes historical performance data for the specified period in the past, calculates the performance utilization trend and applies this trend to the forecast horizon. For better forecast accuracy, along with the performance trend the report provides trend’s confidence intervalthat represents the best- and worst-case scenarios. This allows you to estimate various possible outcomes and helps you rationally plan your resources.
If one or more specified thresholds are breached within the forecast interval, the report marks the cluster disk or volume as problematic and lists constraining resources for it. The report also provides recommendations on appropriate resource allocation to prevent possible resource shortfalls in future.
This section provides step-by-step instructions that will help you understand how to create the Performance Forecast for Hyper-V Storage report. Consider the following example:
You need to forecast the number of days left before the amount of storage free space reaches 30%. Make sure that this threshold will not be breached within the next 30 days. Use the historical performance data for the previous month to calculate the resource utilization trend.
To create the report, follow these steps: