Name
|
Enter a name for the policy.
|
Mode
|
Sets a mode of provisioning quality of service per view:
-
Static. Enables configuration of maximum allowed amounts of BW and IOPS.
-
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.
-
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.
|
Limit By
|
Specifies parameter(s) by which to limit service:
-
BW and IOPS. Enables limiting of service according to bandwidth (BW) and IO per second (IOPS).
-
BW. Enables limiting of service according to BW only. When this option is selected, the fields for setting IOPS limits are inactive.
-
IOPS. Enables limiting of service according to IOPS only. When this option is selected, the fields for setting BW limits are inactive.
|
|
Performance limits per view. Maximum limits define maximum provisioning in the absence of resource contention.
|
Max Read BW
|
Maximum read BW to provision. Enter a value and select the measurement units from the Scale dropdown.
0 means no limit is set.
|
Max Read IOPS
|
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.
|
Max Write BW
|
Maximum write BW to provision. Enter a value and select the measurement units from the Scale dropdown.
|
Max Write IOPS
|
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.
|
|
Performance limits per unit of either used logical capacity or provisioned logical capacity, depending on the provisioning mode. Units are stated per limit.
|
Read BW per GB
|
Maximum read BW (in MB/s) to provision per GB of used logical or provisioned logical capacity, depending on the provisioning mode.
|
Read IOPS per GB
|
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.
|
Write BW per GB
|
Maximum write BW (in MB/s) to provision per GB of used logical or provisioned logical capacity, depending on the provisioning mode.
|
Write IOPS per GB
|
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.
|
Comments
0 comments
Article is closed for comments.