From ReduxWiki

The cPanel backups feature provides you with the ability to download either the entire account (tar.gz) or individual pieces such as MySQL databases, email forwards and/or filters etc.

[edit] Download or Generate a Full Backup

Full backups can only be used for moving your account to another server or keeping a local copy of your account.

Home Directory

• You may merely select Generate Backup with input fields left untouched. This in turn will provide a tar.gz backup of your entire account within your home directory.

Remote FTP Server (Passive mode transfer)

• This option provides you with the ability to FTP a full account backup to the destination of your choice simply by inputing the server, username and password.