# Topologies for Snapshot Copies for Amazon FSx for NetApp ONTAP Open Replication

For replication with the Open Replication feature for Amazon FSx for NetApp ONTAP, you can create snapshot copies for the topologies that are listed in the following tables.

## Single Replication or Fan-Out Replication

Topology | Source Copy
--- | ---
Primary-Mirror | Primary
Primary-Vault | Primary

## Cascade Replication

Topology | Source Copy | Secondary Copy | Tertiary Copy
--- | --- | --- | ---
Primary-Mirror-Mirror | Primary | Mirror | Mirror
Primary-Mirror-Vault | Primary | Mirror | Vault
Primary-Vault-Mirror | Primary | Vault | Mirror
Primary-Vault-Vault | Primary | Vault | Vault

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