Another common problem we have as Windows Server administrators,
particularly when you're using failover clustering,
is that you may find that in your clusters you're
using highly available Hyper‑V VMs,
and some of those VMs may suck up up too many resources,
particularly in the storage subsystem.
How can you provide quality of service, particularly in a cluster,
particularly even more so when you have Hyper‑V,
so that you're providing more equitable storage
access on those virtual machines?
Well, that's the setup for Storage Quality of Service, or Storage QoS.
And this is a Windows feature that's used with Hyper‑V Scale‑Out File
Server as a way to optimize your storage system.
Now this requires that you're using CSV storage for your VMs,
the Cluster Shared Volumes,
and it basically allows you to granularly control the
input/output operations per second that your clustered
Hyper‑V VMs are consuming in those CSVs.
And this would, at the end of the day,
give you consistent access for those clustered VMs. That's really all we need to know about Storage QoS for the purpose of the exam.