> For the complete documentation index, see [llms.txt](https://docs.one-click.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.one-click.dev/platform/volumes.md).

# Volumes

For persistent storage, you can define volumes. The volumes are the persistent storage for your application. You can define as many volumes as you want. To create a new volume you can click the **New Volume** button.

<figure><img src="/files/7EUkRrYSDUzISpZJCHmw" alt=""><figcaption><p>new volume</p></figcaption></figure>

You can define the following options:

* name: the name of the volume, must be unique in the **deployment**
* mount path: the mount path of the volume (e.g. /data, /var/lib/mysql)
* size: the size of the volume in **GiB** (gibibyte)
* storage class: the storage class of the volume (the dropdown will show you the available storage classes inside the Kubernetes cluster)

<figure><img src="/files/BmuzKWcMGSZ2m89AU8BF" alt=""><figcaption><p>volume overview</p></figcaption></figure>

{% hint style="info" %}
You cannot change the size or storage class of a volume after creation. If you need to change the size or storage class you need to create a new volume and migrate the data.
{% endhint %}


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