text: Figure 7-6 Volume mirroring overview 
  
  A second copy can be added to a volume with a single copy or removed from a volume with 
  two copies. Checks that are in place prevent accidental removal of the only remaining copy of 
  a volume. A newly created, unformatted volume with two copies initially has the two copies in 
  an out-of-synchronization state. The primary copy is defined as “fresh” and the secondary 
  copy is defined as “stale”, and the volume is immediately available for use. 
  
  The synchronization process updates the secondary copy until it is fully synchronized. This 
  update is done at the*synchronization rate*that is defined when the volume is created (this 
  volume parameter can be modified after volume creation). The synchronization status for 
  mirrored volumes is recorded on the quorum disk. 
  
  If a mirrored volume is created by using the**format**parameter, both copies are formatted in 
  parallel. The volume comes online when both operations are complete with the copies in 
  sync. 
  
  If it is known that MDisk space (which is used for creating volume copies) is formatted or if the 
  user does not require read stability, a no synchronization option can be selected that 
  declares the copies as synchronized even when they are not. 