text: **Synchronized before creation**
  In this method, the administrator must ensure that the master and auxiliary volumes contain 
  identical data before creating the relationship by using the following technique: 
  
  (cid:2) Both disks are created with the security delete feature to make all data zero. 
  
  (cid:2) A complete tape image (or other method of moving data) is copied from one disk to the 
  
  other disk. 
  
  With this technique, do not allow I/O on the master or auxiliary before the relationship is 
  established. Then, the administrator must run the following commands: 
  
  (cid:2) Run**mkrcrelationship**with the**-sync**flag. 
  (cid:2) Run**startrcrelationship**without the**-clean**flag. 