Im testing the Storage QOS feature of Hyper-V 2012 R2 .
As we know a simple SAS disk has about 120-150 IOPS max.
So i have a Virtual Machine and i have limit it to 150 iops.
The results i take are far worst from a physical disk with the same IOPS. Copies are veeeery slow and also if i try to copy something and in the same time try to open lets say control panel everything becomes unresponsive until the copy finishes. If i remove the qos everything works great.
Is this standard behavior ?