Managing performance using QoS policy group information

Unified Manager enables you to view the quality of service (QoS) policy groups that are available on all the clusters you are monitoring. The policies may have been defined using ONTAP software (System Manager or the ONTAP CLI) or by Unified Manager Performance Service Level policies. Unified Manager also displays which volumes and LUNs have a QoS policy group assigned.

For more information on adjusting QoS settings, see the ONTAP 9 Performance Monitoring Power Guide.

ONTAP 9 Performance Monitoring Power Guide

How storage QoS can control workload throughput
You can create a Quality of Service (QoS) policy group to control the I/O per second (IOPS) or throughput (MB/s) limit for the workloads it contains. If the workloads are in a policy group with no set limit, such as the default policy group, or the set limit does not meet your needs, you can increase the limit or move the workloads to a new or existing policy group that has the desired limit.
Viewing all QoS policy groups available on all clusters
You can display a list of all the QoS policy groups available on the clusters that Unified Manager is monitoring. This includes traditional QoS policies, adaptive QoS policies, and QoS policies managed by Unified Manager Performance Service Level policies.
Viewing volumes or LUNs that are in the same QoS policy group
You can display a list of the volumes and LUNs that have been assigned to the same QoS policy group.
Viewing the QoS policy group settings applied to specific volumes or LUNs
You can view the QoS policy groups that have been applied to your volumes and LUNs, and you can link to the Performance/QoS Policy Groups view to display the detailed configuration settings for each QoS policy.
Viewing performance charts to compare volumes or LUNs that are in the same QoS policy group
You can view the volumes and LUNs that are in the same QoS policy groups and then compare the performance on a single IOPS, MB/s, or IOPS/TB chart to identify any issues.
How different types of QoS policies are displayed in the throughput charts
You can view the ONTAP-defined quality of service (QoS) policy settings that have been applied to a volume or LUN in the Performance Explorer and Workload Analysis IOPS, IOPS/TB, and MB/s charts. The information displayed in the charts is different depending on the type of QoS policy that has been applied to the workload.
Viewing workload QoS minimum and maximum settings in the Performance Explorer
You can view the ONTAP-defined quality of service (QoS) policy settings on a volume or LUN in the Performance Explorer charts. A throughput maximum setting limits the impact of competing workloads on system resources. A throughput minimum setting ensures that a critical workload meets minimum throughput targets regardless of demand by competing workloads.

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