On which systems is Quality of Service available?

On which systems is Quality of Service available?
A . Physical Unity systems only
B . UnityVSA systems only
C . Physical Unity and UnityVSA systems
D . All Flash Unity systems only

Answer: C

Explanation:

UnitVSA features Host I/O limits, also known as Quality of service.

The EMC [Physical] Unity array comes with a pack of new hardware and software features focusing on the true unification:

References:

https://www.presidio.com/blog/1554/technical-summary-emc-unification-with-unity