HP 3PAR Operating System Software - Manual (Page 27)

Figure 11 1-to-N Maximum Supported Configuration
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One of the Remote Copy pairs can be bidirectional. All others must be unidirectional.
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You can use both Remote Copy over IP (RCIP) and Remote Copy over Fibre Channel (RCFC)
connections with 1-to-N Remote Copy configurations. If using both RCIP and RCFC in a 1–to-N
Remote Copy configuration, the node using an RCIP connection must be set up in asynchronous
periodic mode and the node using an RCFC connection must be set up in synchronous mode.
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For RCFC configurations, primary storage systems must have at least four controller nodes.
For RCIP configurations, the primary and backup systems must have at least two controller
nodes each.
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Primary systems with only two controller nodes must be HP 3PAR S-, T-, or F-Class Storage
Systems.
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You can only use HP 3PAR E-Class Storage Systems as backup systems in 1-to-N Remote Copy
configurations.
Synchronous Long Distance Considerations
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For Synchronous Long Distance configurations, a maximum of two storage systems are used
as backup systems for one primary storage system.
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All HP 3PAR Storage Systems in a Synchronous Long Distance configuration must be running
HP 3PAR InForm OS 2.3.1 or above.
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You can configure the Remote Copy pairs only as unidirectional.
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Any or all of the storage systems in a Synchronous Long Distance configuration can be two-node
or four-node systems.
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You must configure one synchronous mode target system and one asynchronous periodic
mode target system.
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You can only create two target systems.
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If you are using two-node systems for your Synchronous Long Distance configuration:
◦ You can use HP 3PAR T- or F-Class Storage Systems.
◦ One node must be set up in asynchronous periodic mode and one node must be set up
in synchronous mode.
Synchronous Long Distance Considerations 27