Storage quality of service
Microsoft has enhanced the Storage Quality of Service (Storage QoS) in Windows Server 2016. In Windows Server 2012 R2, the storage QoS policy was applied per VHDX. The Storage QoS was not agnostic to the underlying storage solution. This solution was great for a single Hyper-V, but when you have dozens of Hyper-V nodes in the cluster talking to same storage system, it doesn't work great because each Hyper-V node is not aware that they are using the same storage bandwidth.
Thanks to the enhancement of the Storage QoS (called Distributed Storage QoS), the policies are now stored in the cluster database. You are now able to create policies to set a minimum and/or a maximum IOPS and apply these rules to a single or multiple virtual machine/virtual hard disk. Thanks to this enhancement, the Hyper-V in a cluster using the same storage system can respect the storage QoS policies.
Distributed Storage QoS enables you to create several service levels such as a high-end performance...