text: FlashCopy mappings between multiple volumes can be grouped in a*Consistency group*to 
  ensure that their T0 is identical for all of them. A simple one-to-one FlashCopy mapping does 
  not need to belong to a consistency group. 
  
  Figure 11-1 shows the basic terms that are used with FlashCopy. All elements are explained 
  in this chapter. 