HP XP Array Manager Software - Manual (Page 33)

WARNING!
N:M and 1:M configurations are intended for use in disaster recovery. N:M and 1:M configurations
cannot be used to create or restore application replicas.
Table 1 Pair management server configurations
Description Name
A configuration in which the same configuration definition file that defines the primary
volume on the primary site is managed by multiple servers, and the configuration
definition file that defines the secondary volume on the secondary site is managed by
a single server.
N:1
(N-to-one)
A configuration in which the same configuration definition file that defines the primary
volume on the primary site is managed by a single server, and the configuration
definition file that defines the secondary volume on the secondary site is managed by
multiple servers.
1:M
(one-to-many)
A combination of the N:1 and 1:M configurations.
N:M
(N-to-many)
A configuration in which the configuration definition files that define the primary and
secondary volumes on the primary and the secondary sites are managed by multiple
servers. The pair management servers must recognize command devices on both the
primary and secondary sites.
N:N
(N-to-N)
The following figure depicts an example configuration.
User Guide 33