text: **11.1.20 FlashCopy attributes and limitations**
  
  The FlashCopy function in IBM Spectrum Virtualize features the following attributes: 
  
  (cid:2) The target is the time-zero copy of the source, which is known as*FlashCopy mapping*
  *target*. 
  
  (cid:2) FlashCopy produces an exact copy of the source volume, including any metadata that was 
  written by the host operating system, Logical Volume Manager (LVM), and applications. 
  
  (cid:2) The source volume and target volume are available (almost) immediately following the 
  FlashCopy operation. 
  
  (cid:2) The source and target volumes must be the same “virtual” size. 
  
  (cid:2) The source and target volumes must be on the same Storwize V7000 system. 
  
  (cid:2) The source and target volumes do not need to be in the same I/O Group or storage pool. 
  
  (cid:2) The storage pool extent sizes can differ between the source and target. 
  
  (cid:2) The target volumes can be the source volumes for other FlashCopy mappings (*cascaded*
  *FlashCopy*). But a target volume can only have one source copy. 
  
  (cid:2) Consistency groups are supported to enable FlashCopy across multiple volumes at the 
  same time. 
  
  (cid:2) The target volume can be updated independently of the source volume. 