HP 3PAR Operating System Software - Manual (Page 72)

Figure 23 Failure of an Individual Volume Group in SLD Remote-Copy Configuration
SystemA fails over to SystemB. SystemB becomes the primary-reverse system and synchronizes
with secondary SystemC in asynchronous periodic mode, as shown in
Figure 24 (page 72)
Figure 24 SystemA-to-System B Failover in SLD Remote-Copy Configuration
When the administrator issues the setrcopygroup recover command, SystemA becomes the
secondary-reverse system, groups are started, and I/O operations take place in synchronous mode
72 Setting Up SLD Remote Copy