text: (cid:2) Bitmaps that are governing I/O redirection (I/O indirection layer) are maintained in both 
  nodes of the Storwize V7000 I/O Group to prevent a single point of failure. 
  
  (cid:2) FlashCopy mapping and Consistency Groups can be automatically withdrawn after the 
  completion of the background copy. 
  
  (cid:2) Thin-provisioned FlashCopy (or Snapshot in the graphical user interface (GUI) use disk 
  space only when updates are made to the source or target data, and not for the entire 
  capacity of a volume copy. 