# Pure Storage Array Replication Feature with Fan-Out Support

With the fan-out configuration, you can create multiple vault/replica copies, using the same backup plan with a primary snapshot copy as the source copy. You must configure Pure Storage FlashArray array mappings on all the vault/replica snapshot copies for all the subclients associated to the backup plan.

## Pre-requisites:

- If you are using a storage policy before upgrading to 2024E (11.36), you must convert the storage policy to the backup plan.

- All clients, Remote MediaAgents, and Access Nodes must be on 2024E (11.36).

- If you are already using a backup plan, after adding a new non-default vault/replica copy, make sure to run at least one snap backup for all subclients associated to the backup plan before running an auxiliary copy.

- Across all the vault/replica copies in the backup plan, the mappings between the source and target arrays must be unique for every subclient.

## Terminology

The Pure Storage FlashArray Replication With Fan-Out Support documentation uses the following terminology:

Default vault/replica copy | The first copy of type vault/replica that you create is the default vault/replica copy.
Non-default vault/replica copy | Subsequent vault/replica copies that you create after the default copies are referred to as non-default vault/replica copies.
Default Mapping | The mapping between the source array (x) and the target array (y) for all the subclients is the default mapping.
Non-default mapping | The mapping between the source array (x) and a different target array (z) for a specific subclient is the non-default mapping.

## Related Topics:

- Inline Replication for the Pure Storage FlashArray Storage Array

- Active/Active Asynchronous Replication for the Pure Storage FlashArray Storage Array

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