Product : Nutanix, ECP [HCI]/5.10, Ultimate
Feature : QoS Type, Performance, Data Services
Content Owner:  Herman Rutten
Quality-of-Service (QoS) is a means to ensure specific performance levels for applications and workloads. In general there are two ways to accomplish this:
1. Ability to set limitations to avoid unwanted behavior from non-critical VMs.
2. Ability to set guarantees to ensure service levels for mission-critical VMs.

Nutanix currently does not offer any such tunable QoS mechanisms inside its ECP platform.

Nutanix AOS 5.0 enhanced performance reliability by introducing separate internal Read and Write I/O Queues so write-intensive workloads (or write bursts) will not starve out read operations, and vice-versa. This behavior is non-tunable.