Quality of Service policies enable you to define quality of service per view. Within quality of service policies, you can set maximum limits on read and write bandwidth and IOPS per view. Those limits can be:
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Static limits for the view. You can set these limits without provisioning a quota for the view path.
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Based on used capacity. You can set maximum limits on the bandwidth and IOPS for reads and writes to the view, per amount of used logical capacity. Logical capacity is the amount of data written, before data reduction.
This mode requires a quota to be provisioned on the view path. If you attach a QoS policy that uses this mode to a view that has no quota, VMS creates a quota on the view path.
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Based on the amount of logical capacity provisioned by a quota on the view path. The relevant quota limit is the soft limit defined in the quota.
This mode requires a quota to be provisioned on the view path. If you attach a QoS policy that uses this mode to a view that has no quota, VMS creates a quota on the view path.
The quota on the view path itself is the only quota that affects the limits.
After creating a QoS policy, you can attach it to a new view when you create the view, and you can attach it to an existing view by modifying the view.
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