The following figure shows the status in a GAD 3DC delta resync (GAD+UR) environment before a failure occurs. The data is copied from the GAD P-VOL to the UR S-VOL.
Disaster recovery procedures for GAD+UR failure conditions:
- Recovering from primary site and P-VOL failures (GAD+UR)
- Recovering from secondary site and S-VOL failures (GAD+UR)
- Recovering from a failure at the primary and secondary sites (GAD+UR)
- Recovering from a quorum disk failure (GAD+UR)