mkthrottle

Use the mkthrottle command to create a new throttle object and associate it with an object (such as a volume). You can also create offloaded I/O throttling (which is a single clustered system throttle).

Syntax

 mkthrottle     -type  offload | vdisk | host | hostcluster | mdiskgrp    [  -bandwidth  bandwidth_limit_in_mb  ]   [  -iops  iops_limit  ]   [  -name  throttle_name  ]   [  -vdisk  {  vdisk_id  |  vdisk_name  } ]   [  -host  {  host_id  |  host_name  } ]   [  -hostcluster  {  hostcluster_id  |  hostcluster_name  } ]   [  -mdiskgrp  {  mdiskgrp_id  |  mdiskgrp_name  } ]

Parameters

-typeoffload | vdisk | host | hostcluster | mdiskgrp
(Required) Specifies the type of throttle, either offload or vdisk.
-bandwidthbandwidth_limit_in_mb
(Optional) Specifies the bandwidth in MBps. This must be a numeric value from 0 - 268435456.
-iopsiops_limit
(Optional) Specifies the I/O operations limit. This must be a numeric value 0 - 33554432.
-namethrottle_name
(Optional) Specifies the throttling object's name. This value must be an alphanumeric string up to 63 characters long.
-vdiskvdisk_id | vdisk_name
(Optional) Specifies the volume ID or name of the volume to throttle. The value must be a numeric or alphanumeric string.
Note: This keyword must be specified when you specify -type vdisk.
This parameter is mandatory for volume throttling but cannot be used for offload throttling.
-hosthost_id | host_name
(Optional) Specifies the host ID or name to throttle.
-hostclusterhostcluster_id | hostcluster_name
(Optional) Specifies the host cluster ID or name to throttle.
-mdiskgrpmdiskgrp_id | mdiskgrp_name
(Optional) Specifies the MDisk group (storage pool) or name to throttle. This applies to parent or child storage pools.

Description

This command creates a new throttle object and associates it with an object (such as a volume).
Note:
  • A throttle object cannot be defined for a host if it is a part of host cluster that already has a host cluster throttle object defined for it.
  • If a host cluster does not have a throttle object defined, its member hosts can have individual host throttles defined.
  • The storage pool throttle objects for a child pool and a parent pool work independently of each other
  • If a volume has multiple copies then throttling is done for the storage pool serving primary copy. Throttling is not applicable for secondary pools that are part of mirrored volumes.

An invocation example for creating a volume throttle of 10000 IOPs and a bandwidth limit of 500 MBps for volume vdisk0

mkthrottle -type vdisk -iops 10000 -bandwidth 500 -vdisk vdisk0

The detailed resulting output:

No feedback

An invocation example for creating offloaded I/O throttling with a bandwidth limit of 500 MBps

mkthrottle -type offload -bandwidth 500

The detailed resulting output:

No feedback

An invocation example for creating a host with a bandwidth limit of 100 MBps

mkthrottle -type host -bandwidth 100 -host host_Win2012SP2

The detailed resulting output:

No feedback

An invocation example for creating a host cluster with a bandwidth limit of 3000 MBps

mkthrottle -type hostcluster -iops 3000 -hostcluster 0

The detailed resulting output:

No feedback

An invocation example for creating a MDisk group with a bandwidth limit of 4000 MBps

mkthrottle -type mdiskgrp -iops 40000 -mdiskgrp 0

The detailed resulting output:

No feedback