Server management for SDL Content Manager

I'd appreciate it if anyone give me suggestion regarding Windows update management for servers of SDL Content Manager.

In our company, all Windows servers must be installed Windows update using WSUS (Windows Server Update Services) once a month. In general, the servers must be restarted after the Windows update installation. The servers consist of three application servers and a database server. When rebooting these servers simultaneously, the application server fails to connect the database. This results some Content Manager services fail to start. Is there any method to avoid such a trouble? I heard from SDL support that it's possible to increase the maximum retry count for the database connection by modifying the registory. But it's not sophisticated way.

Best regards,