HP 3PAR Remote Copy Software - Manual (Page 60)

2.44 Requirements and Restrictions
Remote Copy User’s Guide InForm OS Version 2.3.1
2.14.2 1-to-N Restrictions
In addition to those requirements and restrictions described in Requirements and Restrictions
on page 2.41, the following also apply 1-to-N Remote Copy configurations:
■ In a 1-to-N configuration, one primary storage server participates in a maximum of two
pairs, one for each backup storage server ( Figure 2-20 ). One of these pairs might also be
bidirectional.
Figure 2-20. 1-to-N Maximum Supported Configuration
■ 1-to-N Remote Copy can be used in either Remote Copy over IP (RCIP) and Remote Copy
over Fibre Channel (RCFC) configurations.
■ For RCFC configurations, any storage server acting as a primary must have at least four
controller nodes. For RCIP configurations, the primary and backup servers must have a
minimum of two controller nodes each.
■ Primary systems with only two controller nodes must be InServ S, T, or F-Class Storage
Servers.
■ InServ E-Class Storage Servers can only serve as backup servers.
Primary Server
Backup Servers (Maximum of 2)
Direction of data
replication under
normal operating
conditions