
Figure 3 N-to-1 Remote Copy
1-to-N Configuration
A 1-to-N Remote Copy configuration is composed of multiple Remote Copy pairs. The single primary
storage system can use a maximum of two backup storage systems. Therefore, the primary system
participates in two Remote Copy pairs: one for each backup system.
You can set up 1-to-N Remote Copy configurations in either of the following arrangements:
• One unidirectional Remote Copy pair and one bidirectional Remote Copy pair
• Two unidirectional Remote Copy pairs
Figure 4 (page 17) illustrates an example 1-to-N configuration in which:
• Unidirectional Remote Copy is maintained between Remote Copy pairs System1 and System3.
• Bidirectional Remote Copy is maintained between Remote Copy pair System1 and System2.
16 Deciding on a Remote Copy Configuration
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