Edit

Avoid enabling storage Quality of Service when using a differencing virtual hard disk when the parent and child virtual hard disks are on different volumes

  • Article

Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016

For more information about best practices and scans, see Run Best Practices Analyzer Scans and Manage Scan Results.

Property Details
Operating System Windows Server 2016
Product/Feature Hyper-V
Severity Warning
Category Configuration

In the following sections, italics indicates UI text that appears in the Best Practices Analyzer tool for this issue.

Issue

A differencing virtual hard disk with the parent and child virtual hard disks on different volumes has storage Quality of Service enabled.

Impact

This configuration may result in unexpected storage Quality of Service behavior for the differencing virtual hard disk, as well as other virtual hard disks on the parent and child volumes. This impacts the following the virtual hard disks:

<list of virtual hard disks>

Resolution

Disable storage Quality of Service on the referenced virtual hard disks, or perform a storage migration to move the parent and the child virtual hard disk to the same volume.