text: Figure 11-12 Consistency groups and mappings combinations 
  
  When a source volume is in a FlashCopy mapping with multiple targets, in multiple 
  consistency groups, it allows the copy of a single source at multiple points in time. Therefore, 
  multiple versions of a single volume are kept. 
  
  **Consistency Group with Multiple Target FlashCopy**
  A Consistency Group aggregates FlashCopy mappings, not volumes. Therefore, where a 
  source volume has multiple FlashCopy mappings, they can be in the same or separate 
  Consistency Groups. 
  
  If a volume is the source volume for multiple FlashCopy mappings, you might want to create 
  separate Consistency Groups to separate each mapping of the same source volume. 
  Regardless of whether the source volume with multiple target volumes is in the same 
  consistency group or in separate consistency groups, the resulting FlashCopy produces 
  multiple identical copies of the source data. 
  
  **Dependencies**
  When a source volume has multiple target volumes, a mapping is created for each 
  source-target relationship. When data is changed on the source volume, it is first copied on 
  the target volume because of the copy-on-write mechanism that is used by FlashCopy. 