Workflow for creating a GAD 3DC delta resync environment

Replication pairs are created in the following order when you set up a GAD 3DC delta resync (GAD+UR) environment:

1. GAD pair
   Note:

   • When you create a GAD+UR configuration, the GAD pairs must already be registered to a consistency group.
   • For all the pairs in the GAD consistency group, make sure that each GAD pair is also configured as part of a UR pair and a UR delta resync pair. If you perform delta resync without creating a GAD+UR+UR delta resync configuration while the number of pairs in the GAD consistency group does not match the number of pairs in the UR journal group or the number of pairs in the UR delta resync journal group, delta resync will fail.
2. UR delta resync pair
3. UR pair

Workflow for creating a GAD+UR environment:

1. Preparing the UR secondary site
2. Creating command devices
3. Creating the UR delta resync pairs
4. Starting GAD+UR operations