# Modifying throughput capacity
<a name="increase-throughput-capacity"></a>

You can modify an FSx for Lustre file system's throughput capacity using the Amazon FSx console, the Amazon Command Line Interface (Amazon CLI), or the Amazon FSx API.

## To modify an SSD file system's throughput capacity (console)
<a name="update-throughput-console"></a>

1. Open the Amazon FSx console at [https://console.amazonaws.cn/fsx/](https://console.amazonaws.cn/fsx/).

1. Navigate to **File systems**, and choose the FSx for Lustre file system that you want to modify the throughput capacity for.

1. For **Actions**, choose **Update throughput tier**. Or, in the **Summary** panel, choose **Update** next to the file system's **Throughput per unit of storage**.

   The **Update throughput tier** window appears.

1. Choose the new value for **Desired throughput per unit of storage** from the list.

1. Choose **Update** to initiate the throughput capacity update.
**Note**  
Your file system may experience a very brief period of unavailability during the update.

## To modify an SSD file system's throughput capacity (CLI)
<a name="update-throughput-cli"></a>
+ To modify a file system's throughput capacity, use the [update-file-system](https://docs.amazonaws.cn/cli/latest/reference/fsx/update-file-system.html) CLI command (or the equivalent [UpdateFileSystem](https://docs.amazonaws.cn/fsx/latest/APIReference/API_UpdateFileSystem.html) API operation). Set the following parameters:
  + Set `--file-system-id` to the ID of the file system that you are updating.
  + Set `--lustre-configuration PerUnitStorageThroughput` to a value of `50` `100`, or `200` MBps/TiB for persistent SSD file systems.

  This command specifies that throughput capacity be set to 200 MBps/TiB for the file system.

  ```
  aws fsx update-file-system \
      --file-system-id fs-0123456789abcdef0 \
      --lustre-configuration PerUnitStorageThroughput=200
  ```