With Acronis Cloud Backup you can easily backup Plesk servers and integrate the web GUI for the end-users. This means that you will be able to perform full bare-metal restores when needed and your users can, using self-service - restore or download their files and/or databases.
You can find the installation instructions in the official manual: Installation manual for Acronis Cloud Backup plugin in Plesk.
For more information regarding Acronis Cloud Backup you can use the official Acronis Cloud backup documentation.