You can take site backups very easily from cpanel-

SITE BACKUP:

1)Login to cpanel

2) Click on “Backup” Icon

3) You can see lot of options on this screen.

If you want to take complete site backup including emails click on “Download Today’s Home Backup” Link and save.

SITE RESTORE:

To restore site choose “Restore a Home Backup” and browse backup file. It should be tar.gz extension file. Then hit restore button.

Your site will be restored as per backup.