HP 3PAR Remote Copy Software - Manual (Page 27)

2.11 Remote Copy Configuration
InForm OS Version 2.3.1 Remote Copy User’s Guide
2.5.4 1-to-N Configurations
In a 1-to-N Remote Copy configuration, a single primary storage server can use multiple
InServ Storage Servers as backup servers. For the current release, a 1-to-N Remote Copy
configuration has a maximum of two secondary (backup) targets. Like N-to-1 Remote Copy
configurations, 1-to N Remote Copy configurations can operate in either a combination of
bidirectional (for one Remote Copy pair) and unidirectional functionality (as shown in
Figure 2-5 ), or in complete unidirectional functionality. In the following figure, unidirectional
Remote Copy is maintained between Remote Copy pairs InServ1and InServ3. Bidirectional
Remote Copy is maintained between Remote Copy pair InServ1 and InServ2.
Figure 2-5. 1-to-N Remote Copy
Direction of data
replication
InServ2
InServ3
InServ1
Secondary
Volume
Group W.r
Secondary
Volume
Group X.r
Primary
Volume
Group W
Primary
Volume
Group X
Secondary
Volume
Group Z.r
Primary
Volume
Group Z
Group W to
Group W.r
Group X to
Group X.r
Group Z to
Group Z.r