Disable MySQL Strict ModeYou must disable MySQL® Strict Mode (sql_mode) to run WHMCS on your server. We recommend disabling this immediately after you finish installation.
Enable Encrypted MySQLYou can configure WHMCS to use an encrypted MySQL® database. This requires additional steps to add settings to your configuration.php file.
Migrate Local StorageYou can migrate your data between local storage locations, or migrate data from an existing location like an Amazon S3™ bucket.
Migrate Storage LocationsYou can easily migrate your WHMCS installation's data storage between locations.
Restore the WHMCS DatabaseIf a serious problem occurs, you can restore your WHMCS database from a recent backup.
Set Up Amazon S3 StorageWHMCS supports using Amazon S3™ and Amazon S3-compatible services as storage providers. After you create an Amazon S3 bucket, you can configure it as your storage location.
Set Up an Amazon S3 BucketYou must create a bucket before you can start configure Amazon S3™ as a storage provider in WHMCS.