# Open Replication for Amazon FSx for NetApp ONTAP with Fan-Out Support

With the fan-out configuration, you can create multiple vault copies or replica copies and multiple mirror copies, using the same storage policy with a primary snapshot copy as the source copy.

You must configure storage virtual machine (SVM) mappings on all secondary snapshot copies. During snapshot replication, if there are multiple relationships for a given source volume, the Commvault software uses SVM mappings to define the precedence for selecting relationships.

When you create the first snapshot copy of type vault/replica or of type mirror, that snapshot copy is the default copy. Other snapshot copies that are associated with that storage policy are non-default copies.

## Terminology

The Open Replication for Amazon FSx for NetApp ONTAP with Fan-Out support documentation uses the following terminology:

Term | Description
--- | ---
Default vault/replica copy | The first copy of type vault/replica that you create is the default vault/replica copy. Subsequent vault/replica copies that you create are referred to as non-default vault/replica copies.
Default mirror copy | The first copy of type mirror that you create is the default mirror copy. Subsequent mirror copies that you create are referred to as non-default mirror copies.

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