Dell PowerStore Configuring Volumes

Create a Quality of Service (QoS) policy and I/O limit rules

You can create a QoS policy and I/O limit rules to apply to volumes and volume groups that have already been created.

1. Under Storage, click QoS.
2. On the QoS Policies page, click Create.
3. On the Create a QoS Policy slide-out panel, enter a name for the QoS policy and, optionally, a description of the policy.
4. Click Create to create an I/O limit rule.
5. On the Create IO Limit Rule slide-out panel, enter a name for the I/O limit rule.
6. Click the Absolute Limit radio button or the Density-base Limit radio button.
   • Click the Absolute Limit radio button if you want the maximum IOPS per GB or maximum bandwidth per GB to be a fixed value.
   • Click the Density-based Limit radio button if you want the limit to change in proportion to the capacity of the volume or volume group.
7. If you want to include a burst, enter a percentage in the Burst field.
   The burst setting is an option that allows traffic to exceed the maximum IOPS or bandwidth limit. When a burst is enabled, the traffic can exceed that limit by a designated percentage for a few seconds.
8. Click Create.