HP 3PAR Remote Copy Software - Manual (Page 59)

2.43 Requirements and Restrictions
InForm OS Version 2.3.1 Remote Copy User’s Guide
2.14.1 N-to-1 Restrictions
In addition to those requirements and restrictions described in Requirements and Restrictions
on page 2.41, the following also apply to N-to-1 Remote Copy configurations:
■ In an N-to-1 configuration, one remote storage server participates in a maximum of four
pairs, one for each primary storage server ( Figure 2-19 ). One of these pairs might also be
bidirectional.
Figure 2-19. N-to-1 Maximum Supported Configuration
■ N-to-1 Remote Copy can be used in both Remote Copy over IP (RCIP) and Remote Copy over
Fibre Channel (RCFC) configurations.
■ Any storage server acting as a backup for two or more storage servers (acting as primary
systems) must have at least four controller nodes.
■ The backup server in the N-to-1 configuration must use only S-Class (P4) or T-Class controller
nodes. E-Class and two node F-Class controller nodes cannot be used.
■ Only asynchronous periodic mode volume groups are supported.
Backup Server
Primary Servers (Maximum of 4)
Direction of data
replication under
normal operating
conditions