1 n-to-1 restrictions, N-to-1 restrictions, N-to-1 – HP 3PAR Remote Copy Software User Manual
Page 59: Restrictions

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
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 (
). 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
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