# Enabling autosizing
<a name="enable-volume-autosizing"></a>

Volume autosizing so that the volume will automatically grow to a specified size when it reaches a used space threshold. You can do this for FlexVol volume types (the default volume type for FSx for ONTAP) using the [https://docs.netapp.com/us-en/ontap-cli-9111/volume-autosize.html](https://docs.netapp.com/us-en/ontap-cli-9111/volume-autosize.html) ONTAP CLI command.

**To enable volume autosizing (ONTAP CLI)**

1. To access the ONTAP CLI, establish an SSH session on the management port of the Amazon FSx for NetApp ONTAP file system or SVM by running the following command. Replace `{{management_endpoint_ip}}` with the IP address of the file system's management port.

   ```
   [~]$ ssh fsxadmin@{{management_endpoint_ip}}
   ```

   For more information, see [Managing file systems with the ONTAP CLI](managing-resources-ontap-apps.md#fsxadmin-ontap-cli). 

1. Use the `volume autosize` command as shown, replacing the following values:
   + Replace {{`svm_name`}} with the name of the SVM that the volume is created on.
   + Replace {{`vol_name`}} with name of the volume that you want to resize.
   + Replace {{`grow_threshold`}} with a used space percentage value (such as `90`) at which the volume will automatically increase in size (up to the {{`max_size`}} value).
   + Replace {{`max_size`}} with the maximum size that the volume can grow to. Use the format {{`{{integer}}`}}`[KB|MB|GB|TB|PB]`; for example, `300TB`. The maximum size is 300 TB. The default is 120% of the volume size.
   + Replace {{min\_size}} with the minimum size that the volume will shrink to. Use the same format as for {{max\_size}}.
   + Replace {{shrink\_threshold}} with the used space percentage at which the volume will automatically shrink in size.

   ```
   ::> volume autosize -vserver {{svm_name}} -volume {{vol_name}} -mode grow_shrink -grow-threshold-percent {{grow_threshold}} -maximum-size {{max_size}} -shrink-threshold-percent {{shrink_threshold}} -minimum-size {{min_size}}
   ```

1. To show the current autosize setting, run the following command. Replace {{svm\_name}} and {{vol\_name}} with your information.

   ```
   ::> volume autosize -vserver {{svm_name}} -volume {{vol_name}}
   ```