You can add Site Backup to your hosting account or server to create automatic daily backups. For more information about what it does, see What is Site Backup?
But I have no such menu under my Customise tab. I have Linux Economy Hosting.
Manual backups in cPanel
If you have any databases you should also download a backup of them by clicking the database's name in the Download a MySQL Database Backup area.
you should click My Products,
then click "HOSTING"
and choose "options"
after that move to "customize" tab, and you will see there "site backup" where you can choose GBs and purchase them