text: Figure 11-1 FlashCopy terminology 
  
  **11.1.3 FlashCopy Mapping**
  
  The relationship between the source volume and the target volume is defined by a FlashCopy 
  mapping. The FlashCopy mapping can have three different types, four attributes, and seven 
  different states. 
  
  The FlashCopy mapping can be one of the following types: 
  
  (cid:2) Snapshot: Sometimes referred to as*nocopy*. A T0 copy of a volume without a background 
  copy of the data from the source volume to the target. Only the changed blocks on the 
  source volume are copied. The target copy cannot be used without an active link to the 
  source. 