# Inline Replication for the Fujitsu ETERNUS AF / DX Storage Array

The Fujitsu ETERNUS AF / DX Replication feature creates a replica copy on a remote array, in addition to the primary snapshot copy on the local array.

When you run a snap backup operation, the snapshot is created on the local array and on the remote array.

## Key Features

The key features of the Fujitsu ETERNUS AF / DX Replication feature are as follows:

- The primary copy and the replica copy are independent of each other, and can have separate retention policies.

- The replica copy is crash-consistent.

- For inline replication, replication is performed only if the subclient on which you run the snapshot operation is associated with the replica copy.

## Limitations

The revert operation is not supported on the replica copy.

## Supported Agents

All agents supported by the Fujitsu ETERNUS AF / DX storage array.

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