# PerformanceMode

EFS Performance mode.

- Source: [`aws-efs/lib/efs-file-system.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0/packages/aws-cdk-lib/aws-efs/lib/efs-file-system.ts#L92)

## Example

```ts
const fileSystem = new efs.FileSystem(this, 'MyEfsFileSystem', {
  vpc: new ec2.Vpc(this, 'VPC'),
  lifecyclePolicy: efs.LifecyclePolicy.AFTER_14_DAYS, // files are not transitioned to infrequent access (IA) storage by default
  performanceMode: efs.PerformanceMode.GENERAL_PURPOSE, // default
  outOfInfrequentAccessPolicy: efs.OutOfInfrequentAccessPolicy.AFTER_1_ACCESS, // files are not transitioned back from (infrequent access) IA to primary storage by default
  transitionToArchivePolicy: efs.LifecyclePolicy.AFTER_14_DAYS, // files are not transitioned to Archive by default
  replicationOverwriteProtection: efs.ReplicationOverwriteProtection.ENABLED, // Set to `DISABLED` if you want to create a read-only file system for use as a replication destination
});
```

## Members

| Member | Description |
| --- | --- |
| `GENERAL_PURPOSE` | General Purpose is ideal for latency-sensitive use cases, like web serving environments, content management systems, home directories, and general file serving. |
| `MAX_IO` | File systems in the Max I/O mode can scale to higher levels of aggregate throughput and operations per second. |

## Referenced by

- [`FileSystemProps`](/v2/docs/aws-cdk-lib.aws_efs.FileSystemProps).performanceMode