text: Figure 7-21 Compressed pane 
  
  This pane gives the following options: 
  
  (cid:2) Real capacity: Real capacity of the volume, which is specified as percentage of the virtual 
  capacity or in bytes. 
  
  (cid:2) Automatically expand: Whether to automatically expand the real capacity of the volume if 
  needed; defaults to Enabled. 
  
  (cid:2) Warning threshold: Whether a warning message is sent, and at what percentage of filled 
  virtual capacity; defaults to Enabled, with a warning threshold set at 80%. 
  
  You cannot specify grain size for a compressed volume. 