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How a multiple-mirrors fanout works

A multiple-mirrors fanout deployment is supported on FlexVol volumes and Infinite Volumes, and consists of a source volume that has a direct mirror relationship to multiple secondary volumes.

The volume on A (as shown in the following illustration) always contains the base Snapshot copies for both B and C. Because updates to B or C automatically include the base Snapshot copy of the other relationship, B and C always have a common Snapshot copy.

Note: A fanout deployment might not provide as much data protection as a cascade chain.
The following illustration depicts a mirror and mirror fanout: Data protection deployment: multiple-mirrors mirrors fanout