text: **Note:**Thin-provisioned and compressed volumes in a data reduction pool cannot have 
  Easy Tier switched off. It is possible to switch off Easy Tier only at a pool level. 
  
  This can be done only by using the CLI. Use the**lsvdisk**command to check and the**chvdisk**
  command to modify Easy Tier function status on a volume copy, as shown in Example 10-4. 
  
  Example 10-4 Checking and modifying Easy Tier settings on a volume 
  
  IBM_Storwize:ITSO-V7k:superuser>lsvdisk vdisk0 |grep easy_tier 
  easy_tier on 
  easy_tier_status balanced 
  IBM_Storwize:ITSO-V7k:superuser>chvdisk -easytier off vdisk0 
  IBM_Storwize:ITSOV7K:superuser> 