text: The Easy Tier function can be turned on or off at the storage pool and the volume level. The 
  *automatic storage pool balancing*is an integrated part of the IBM Easy Tier engine and is 
  enabled by default on all pools. Storage Pool Balancing and IBM Easy Tier do not require 
  more licenses within IBM Spectrum Virtualize that is running on IBM Storwize V7000. This 
  load balancing feature is not considered an Easy Tier function, although it uses the same 
  principles and mechanism. 