You can perform the QoS operations by following the workflow and the procedures.
- Configure QoS settings.
- After normal operations, check the QoS monitor.
- If the results are unexpected or abnormal, change the QoS settings as needed.
- If the results are normal and an alert notification was issued, change the QoS settings as needed.
- If the results are normal and no alert notification was issued, continue monitoring operations.
Phase 1: QoS system configuration designs and environmental settings
To set the service levels for individual volumes, you can configure the following settings:
- QoS setting 1: QoS upper-limit, lower-limit, and priority controls
Set an upper limit, a lower limit, and a priority for each volume by following Commands for QoS operations.
- QoS setting 2: QoS alert
Set QoS alert for the target volume to monitor the performance on the volume.
To set the service levels for individual QoS groups, you can configure the following settings:
- QoS setting 1: QoS group creation and QoS upper-limit and priority controls
First, create a QoS group, set an upper limit and a priority level for the QoS group, and then add a volume to the QoS group. You can set an individual upper limit, lower limit, and priority level for each volume included in the QoS group.
- QoS setting 2: QoS alert
Set QoS alert for the target QoS group to monitor the performance on the QoS group.
Phase 2: QoS operations
The QoS monitoring function enables you to monitor the performance information on a volume or QoS group. Verify the abnormal monitor information, and then update the QoS setting values as needed by following Commands for QoS operations.
The QoS alert function enables you to recognize that the I/O operations performed on a volume or QoS group are out of the valid range of the QoS setting values. Verify the alert information, and then update the QoS setting values as needed by following QoS use cases.