QoS relates to how ingress or egress traffic flows are prioritized and handled. The switch QoS configuration supports the shared host adapters fine-tuned QoS policies. Host QoS policies protect storage traffic from workload and management traffic in a fully converged storage-switched setup.
Typical switch feature implementation for QoS: Create Class maps and create policy maps, assign policies to interfaces. Class-maps are used to classify the traffic flows, queuing for egress queues, network-QoS for traffic-class IDs for ingress buffer configurations. Policy maps define policies for the classified traffic flows based on class map. See attachments for specific commands.
Azure traffic types are allocated specific bandwidth. Storage traffic has the highest bandwidth allocation.
Priority | Description/Policy | Bandwidth (%) |
0 | Management, Compute | 49 % |
3 | Storage | 50 % |
7 | Cluster Communication | 1 % |