Enabling automatic backups can help prevent data loss for a MariaDB server. Azure can create and save backups in either locally redundant or geo-redundant storage for greater resiliency, with geo-redundant storage providing the greatest availability. The maximum retention period for MariaDB backup storage is 35 days and they are encrypted by default. For more information, see the Azure documentation.
References:
https://learn.microsoft.com/en-us/azure/mariadb/concepts-backup
In Azure Console -
In Terraform -
References:
https://learn.microsoft.com/en-us/azure/mariadb/howto-restore-server-portal
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/mariadb_server#geo_redundant_backup_enabled