text: (cid:2) When a volume is migrated out of a storage pool that is managed with Easy Tier, Easy 
  Tier automatic data placement mode is no longer active on that volume. Automatic data 
  placement is also turned off while a volume is being migrated, even when it is between 
  pools that both have Easy Tier automatic data placement enabled. Automatic data 
  placement for the volume is reenabled when the migration is complete. 
  
  When the system migrates a volume from one storage pool to another, it attempts to 
  migrate each extent to an extent in the new storage pool from the same tier as the original 
  extent, if possible. 
  
  (cid:2) When Easy Tier automatic data placement is enabled for a volume, you cannot use the 
  **svctask migrateexts**CLI command on that volume. 
  
  **10.1.2 Implementing and tuning Easy Tier**
  
  The Easy Tier function is enabled by default. It starts monitoring I/O activity immediately after 
  storage pool and volumes are created, and starts extent migration as soon as the necessary 
  I/O statistics are collected. 
  
  A few parameters can be adjusted. Also, Easy Tier can be switched off on selected volumes 
  in storage pools. 
  
  **MDisk settings**
  The tier for internal (array) MDisks is detected automatically and depends on the type of 
  drives, which are its members. No adjustments are needed. 