# 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\$1size* with the minimum size that the volume will shrink to. Use the same format as for *max\$1size*.
   + Replace *shrink\$1threshold* 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\$1name* and *vol\$1name* with your information.

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