We strongly recommend backing up your WHMCS installation's database regularly. If a catastrophic system failure occurs, restoring a recent database backup can ensure the safety and security of your data.
You can monitor and manage your WHMCS installation's database, including optimizing database tables and manually downloading database backups, from within the WHMCS Admin Area.
When you set up your WHMCS installation, you must set up the system cron job. The system cron controls all of WHMCS's automation, including daily tasks like generating invoices and sending email notifications.
As your database size increases, you may experience slower page loads and other speed-related issues. Optimizing your database and reducing unnecessary data can help WHMCS run faster.