What is TDP?

Not knowing how the backups are configured is dangerous, as you (the DBA responsible for that SQL Server) has to know how are the backups configured in order to change / add a new database to the backup job. Let's assume if there is a new database that needs to be created on that instance and it has to be backed-up regularly how are you guys going to ensure that?

Regarding the error message starting up database xxxx, which does not exist on your SQL Server, I do not have a clue..

Sorry couldn't be of much help..