Exporting Volumes

I'm new to the docker/portainer thing, but I have managed to set up an ubuntu server, running a docker container of plex. I have also managed to set it up with a persistent plex_data volume. Portainer is running using an agent as the environment, so I can browse the volume from firefox.

My question is can I now use portainer to download/upload the data volume as a volume, so I can easily backup and/or migrate the plex server to a different host?