HP 3PAR Operating System Software - Manual (Page 74)

Figure 26 SystemA-to-SystemC Failover
After all updates have been sent to SystemC, SystemB then reverts to being the secondary system.
After SystemC receives the update from SystemB, it becomes the primary-reverse system and
continues to synchronize with SystemB in asynchronous periodic mode, as shown in
Figure 27 (page
74) .
Figure 27 SystemC Becomes Primary-Reverse System
74 Setting Up SLD Remote Copy