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# AWS::EFS::FileSystem FileSystemProtection
<a name="aws-properties-efs-filesystem-filesystemprotection"></a>

Describes the protection on the file system. 

## Syntax
<a name="aws-properties-efs-filesystem-filesystemprotection-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-efs-filesystem-filesystemprotection-syntax.json"></a>

```
{
  "[ReplicationOverwriteProtection](#cfn-efs-filesystem-filesystemprotection-replicationoverwriteprotection)" : String
}
```

### YAML
<a name="aws-properties-efs-filesystem-filesystemprotection-syntax.yaml"></a>

```
  [ReplicationOverwriteProtection](#cfn-efs-filesystem-filesystemprotection-replicationoverwriteprotection): String
```

## Properties
<a name="aws-properties-efs-filesystem-filesystemprotection-properties"></a>

`ReplicationOverwriteProtection`  <a name="cfn-efs-filesystem-filesystemprotection-replicationoverwriteprotection"></a>
The status of the file system's replication overwrite protection.  
+ `ENABLED` – The file system cannot be used as the destination file system in a replication configuration. The file system is writeable. Replication overwrite protection is `ENABLED` by default. 
+ `DISABLED` – The file system can be used as the destination file system in a replication configuration. The file system is read-only and can only be modified by EFS replication.
+ `REPLICATING` – The file system is being used as the destination file system in a replication configuration. The file system is read-only and is modified only by EFS replication.
If the replication configuration is deleted, the file system's replication overwrite protection is re-enabled, the file system becomes writeable.  
*Required*: No  
*Type*: String  
*Allowed values*: `DISABLED | ENABLED`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)