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

Page 59: Restrictions

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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