text: (cid:2) Promote 
  
  Moves the hotter extents to the MDisks (ranks) of the higher-performance tier with 
  available capacity. Promote occurs within adjacent tiers. 
  
  (cid:2) Demote 
  
  Demotes colder extents from the higher tier to the lower tier. Demote occurs within 
  adjacent tiers. 
  
  (cid:2) RB-Move (Auto Rebalance) 
  
  Auto-rebalance, which is also known as intra-tier rebalancing, is a capability of Easy Tier 
  that automatically rebalances the workload across all MDisks of a storage tier within a 
  managed extent pool. It also automatically populates new ranks that were added to the 
  pool. 
  
  (cid:2) Warm demote 
  
  Easy Tier continuously ensures that the higher performance tier does not suffer from 
  saturation or overload conditions that might affect the overall performance in the pool. This 
  action is triggered when bandwidth or IOPS exceeds a predefined threshold of an MDisk 
  and causes the movement of selected extents from the higher-performance tier to the 
  lower-performance tier to prevent MDisk overload. 
  
  (cid:2) Cold demote 
  
  Easy Tier automatically locates and demotes inactive (or cold) extents that are on a higher 
  performance tier to its adjacent lower-cost tier. In that way, it automatically frees extents on 
  the higher storage tier before the extents on the lower tier become hot, and then helps the 
  system to be more responsive to new hot data. 