HP 3PAR Remote Copy Software - Manual (Page 25)

2.9 Remote Copy Configuration
InForm OS Version 2.3.1 Remote Copy User’s Guide
2.5.3 N-to-1 Configurations
In N-to-1 Remote Copy configurations, a maximum of four primary storage servers use the
same secondary (backup) storage server. N-to-1 Remote Copy configurations can operate in
either a combination of bidirectional (for one Remote Copy pair) and unidirectional
functionality (as shown in Figure 2-4 ), or in complete unidirectional functionality. In the
following figure, unidirectional Remote Copy is maintained between Remote Copy pairs
InServ1 and InServ4, and Remote Copy pairs InServ2 and InServ4. Bidirectional Remote
Copy is maintained between Remote Copy pair InServ3 and InServ4.
NOTE: In an N-to-1 Remote Copy configuration, only one link can be
bidirectional. The secondary storage server must have four or more controller
nodes.