Home » EMC » E20-393 » 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
Correct Answer: C
Explanation/Reference:
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:
Support for setting up Host I/O limits, also known as QOS, providing a more predictable performance for the workloads by putting limits on I/O throughputs and bandwidth
DPE reduced from a 7U footprint to an innovative 2U footprint
12 GB SAS back-end for the Unity DAEs; EMC VNX/VNXe supported only 6 GB SAS backend
Completely redesigned user interface based on HTML5
References: https://www.emc.com/collateral/white-papers/h15092-emc-unity-unity-vsa.pdf (page 16)
http://www.presidio.com/blog/technical-summary-emc-unification-unity
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