Make a backup. And there are many reasons for that like: server failure, updates or new installation gone wrong, simple mistakes or hacker attack. The data on your web server might be gone. It is easy to replace hardware and could be hard or even impossible to restore data. To be ready have a backup strategy. What is the most sensitive data? Backup it daily or even more often. Do you have full (complete cPanel) website backup? Complete cPanel backup include mail, subdomains, data bases, server setting and more. You need to make one weekly or monthly and before and after all major updates. WordPress, Drupal, Magento and WHMCS has option to add automatic data bases backups. In summary, for the best backup practices make daily or hourly data base backups and weekly or monthly full cPanel backup.