Figure 6-13 Editing throttle for a pool If more than one throttle applies to an I/O operation, the lowest and most stringent throttle is  used. For example, if a throttle of 200 MBps is defined on a pool and 100 MBps throttle is  defined on a Volume of that pool, the I/O operations are limited to 100 MBps. A child pool throttle is independent of its parent pool throttle. Limits for a child can be higher  than for a parent storage pool. If a throttle exists for the storage pool, the window that is shown in Figure 6-13 also shows the  Remove  button, which is used to delete the throttle. To set storage pool throttle with CLI, use the  mkthrottle command. Example 6-5 shows a  storage pool throttle ( iops_bw_limit ) set to 3 Mbps and 1000 IOPS on  Pool0 . To remove a throttle with CLI, use the  rmthrottle command. It needs the throttle ID or  throttle name to be supplied as an argument, as shown on Example 6-6. The use of the  command returns no feedback if it runs successfully. 222  Implementing the IBM System Storage SAN Volume Controller with IBM Spectrum Virtualize V8.2.1 Example 6-6 Removing pool throttle with rmthrottle Example 6-5 Setting storage pool throttle with mkthrottle IBM_2145:ITSO-SV1:superuser>mkthrottle -type mdiskgrp -iops 1000 -bandwidth 3  -name iops_bw_limit -mdiskgrp Pool0 Throttle, id [0], successfully created. IBM_2145:ITSO-SV1:superuser>rmthrottle iops_bw_limit IBM_2145:ITSO-SV1:superuser>