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Name
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Enter a name for the policy.
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Mode
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Sets a mode of provisioning quality of service per view:
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Static. Enables configuration of maximum allowed amounts of BW and IOPS.
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Used Capacity. Enables limiting of maximum BW and IOPS per unit of used logical capacity. For example, you can allow for 3 read IOPS per GB of used capacity. Static limits are also configurable and define boundaries of performance allowance.
This mode requires that a quota is configured on the view.
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Provisioned Capacity. Enables limiting of maximum BW and IOPS per unit of logical capacity as provisioned by the soft limit of a quota on the view path. For example, you can allow for 1 MB/sec of read BW per GB of the capacity limit configured in a quota (the soft limit capacity). Static limits are also configurable and define boundaries of performance allowance.
This mode requires that a quota is configured on the view.
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Limit By
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Specifies parameter(s) by which to limit service:
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BW and IOPS. Enables limiting of service according to bandwidth (BW) and IO per second (IOPS).
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BW. Enables limiting of service according to BW only. When this option is selected, the fields for setting IOPS limits are inactive.
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IOPS. Enables limiting of service according to IOPS only. When this option is selected, the fields for setting BW limits are inactive.
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Performance limits per view. Maximum limits define maximum provisioning in the absence of resource contention.
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Max Read BW
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Maximum read BW to provision. Enter a value and select the measurement units from the Scale dropdown.
0 means no limit is set.
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Max Read IOPS
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Maximum read IOPS to provision.
The size of a single IO for the purpose of the limit is 1 MB. In other words, the number of IOs per request is obtained by dividing request size by 1 MB.
If Limit By is set to BW and IOPS, you must set this limit (Max Read IOPS) to be equal to or greater than the Max Read BW limit.
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Max Write BW
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Maximum write BW to provision. Enter a value and select the measurement units from the Scale dropdown.
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Max Write IOPS
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Maximum write IOPS to provision.
The size of a single IO for the purpose of the limit is 1 MB. In other words, the number of IOs per request is obtained by dividing request size by 1 MB.
If Limit By is set to BW and IOPS, you must set this limit (Max Write IOPS) to be equal to or greater than the Max Write BW limit.
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Performance limits per unit of either used logical capacity or provisioned logical capacity, depending on the provisioning mode. Units are stated per limit.
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Read BW per GB
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Maximum read BW (in MB/s) to provision per GB of used logical or provisioned logical capacity, depending on the provisioning mode.
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Read IOPS per GB
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Maximum read IOPS to provision per GB of used logical or provisioned logical capacity, depending on the provisioning mode.
The size of a single IO for the purpose of the limit is 1 MB. In other words, the number of IOs per request is obtained by dividing request size by 1 MB.
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Write BW per GB
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Maximum write BW (in MB/s) to provision per GB of used logical or provisioned logical capacity, depending on the provisioning mode.
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Write IOPS per GB
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Maximum write IOPS to provision per GB of used logical or provisioned logical capacity, depending on the provisioning mode.
The size of a single IO for the purpose of the limit is 1 MB. In other words, the number of IOs per request is obtained by dividing request size by 1 MB.
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