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From the left navigation menu, select Element Store and then QOS Policies.
The following fields are displayed:
Name
The name of the policy.
Mode
The mode of provisioning quality of service per view:
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Static. In this mode, read and/or write BW and/or IOPS may be limited to a set maximum limit.
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Used Capacity. In this mode, BW and IOPS may be limited set per unit of used logical capacity. For example, the policy may allow for 3 read IOPS per GB of used capacity. Static limits are also configurable and define boundaries of performance allowance.
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Provisioned Capacity. In this mode, BW and IOPS may be limited per unit of logical capacity, as provisioned by the soft limit of a quota on the view path. For example, the policy may allow 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.
Limit By
Specifies which performance parameter(s) are limited by the policy:
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BW and IOPS. The policy limits service according to bandwidth (BW) and IO per second (IOPS).
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BW. The policy limits service according to BW only. When this option is selected, the fields for setting IOPS limits are inactive.
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IOPS. The policy limits service according to IOPS only. When this option is selected, the fields for setting BW limits are inactive.
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To view all QoS policies from the VAST CLI, use the qospolicy list command. To view details of a specific QoS policy, use the qospolicy show command.
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