Let's say you find the backups. They're likely in some obsolete tape format, and you would have to reconstruct an ancient Novell/NT/Unix environment to recover

Let's say you find the backups. They're likely in some obsolete tape format, and you would have to reconstruct an ancient Novell/NT/Unix environment to recover them. That's assuming you even know the source code is on a tape labeled something like "Server03".