text: You can create either an IOPS or bandwidth limit or both. You can use storage pool throttles 
  to avoid overwhelming the back-end storage. Parent and child pool throttles are independent 
  of each other. A child pool can have higher throttle limits than its parent pool. 
  
  In general, you manage storage as follows: 
  
  1. Create storage pools (standard or DRP), depending on your solution needs. 
  
  2. Add managed storage to pools by using one of the following options: 
  
  – Create array MDisks out of internal drives or flash modules. 
  – Assign MDisks provisioned from external storage systems to pools. 
  
  3. Create volumes on pools and map them to hosts or host clusters. 
  
  You manage storage pools either in the Pools pane of the GUI or with the CLI. To access the 
  Pools pane, click**Pools**→**Pools**, as shown in Figure 6-2. 