text: 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 100 MBps is defined on a pool and 200 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 limits for a parent storage pool. 
  
  If a throttle already exists for the storage pool, the dialog box that is shown in Figure 6-13 also 
  shows the**Remove**button that 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, named iops_bw_limit, set to 3 Mbps and 1000 IOPS, on Pool0. 
  
  Example 6-5 Setting storage pool throttle with CLI 
  
  IBM_Storwize:ITSOV7K:superuser>mkthrottle -type mdiskgrp -iops 1000 -bandwidth 3 
  -name iops_bw_limit -mdiskgrp Pool0 
  Throttle, id [0], successfully created. 