- Notes, cautions, and warnings
- Additional Resources
- Volumes
- Volume groups overview
- Hosts and host group configurations
- Data mobility for volumes and volume groups
- Thin clones
- Quality of Service (QoS) policies
- Performance policies
Dell PowerStore Configuring Volumes
Quality of Service (QoS) limits
With maximum limits, you specify what the maximum number of sustained IOPS or bandwidth is allowed over time. Maximum limits apply only to I/O from external hosts. These limits do not apply to internal asynchronous or synchronous replication operations or migration I/O.
Limits to number of policies
Each volume or volume group can be associated with only one QoS policy.
On a cluster level, there is a limit of 100 QoS policies for each cluster. However, there can be 1000 QoS associations for volumes and volume groups within a cluster.
If a QoS policy is assigned to a volume group, you cannot assign a different QoS policy to a volume within that group.
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