qos adaptive-policy-group modify

Contributors

Modify an adaptive policy group

Availability: This command is available to cluster administrators at the admin privilege level.

Description

The qos adaptive-policy-group modify command modifies an adaptive policy group.

Only user-created adaptive policy groups can be modified. Default adaptive policy groups are read-only and cannot be modified.

Parameters

-policy-group <text> - Name

Specifies the name of the adaptive policy group. Adaptive policy group names must be unique and are restricted to 127 alphanumeric characters including underscores "_" and hyphens "-". Adaptive policy group names must start with an alphanumeric character. Use the qos adaptive-policy-group rename command to change the adaptive policy group name.

[-expected-iops {<integer>[IOPS[/{GB|TB}]] (default: TB)}] - Expected IOPS

Specifies the minimum expected IOPS per TB or GB allocated based on the storage object allocated size. QoS minimum throughput setting is calculated from the expected-iops parameter. It is set only for the storage objects that reside on AFF platforms.

[-peak-iops {<integer>[IOPS[/{GB|TB}]] (default: TB)}] - Peak IOPS

Specifies the maximum possible IOPS per TB or GB allocated based on the storage object allocated size or the storage object used size.

[-absolute-min-iops <qos_tput>] - Absolute Minimum IOPS

Specifies the absolute minimum IOPS which is used as an override when the expected IOPS is less than this value. The default value is computed as follows:

if expected-iops >= 6144/TB, then absolute-min-iops = 1000IOPS; if expected-iops >= 2048/TB and expected-iops < 6144/TB, then absolute-min-iops = 500IOPS; if expected-iops >= 1/MB and expected-iops < 2048/TB, then absolute-min-iops = 75IOPS.

[-expected-iops-allocation {used-space|allocated-space}] - Expected IOPS Allocation

Specifies the expected IOPS allocation policy. The allocation policy is either allocated-space or used-space . When the expected-iops-allocation policy is set to allocated-space , the expected IOPS is calculated based on the size of the storage object. When the expected-iops-allocation policy is set to used-space , the expected IOPS is calculated based on the amount of data stored in the storage object taking into account storage efficiencies. The default value is allocated-space .

[-peak-iops-allocation {used-space|allocated-space}] - Peak IOPS Allocation

Specifies the peak IOPS allocation policy. The allocation policy is either allocated-space or used-space . When the peak-iops-allocation policy is set to allocated-space , the peak IOPS is calculated based on the size of the storage object. When the peak-iops-allocation policy is set to used-space , the peak IOPS is calculated based on the amount of data stored in the storage object taking into account storage efficiencies. The default value is used-space .

[-block-size {ANY|4K|8K|16K|32K|64K|128K}] - Block Size

Specifies the block size for the QoS adaptive policy group. If specified, QoS controls will be applied based on both IOPS and throughput.

Examples

The following example modifies the "p1" adaptive policy group with specified values.
cluster1::> qos adaptive-policy-group modify -policy-group p1
            -expected-iops 200IOPS/TB -peak-iops 2000IOPS/TB
            -absolute-min-iops 100IOPS