While working through a migration, I discovered something interesting. Apparently you don't need any working connectors for a functioning (?) Tomcat instance. Setup: Tomcat 7.0.51, Java 1.7.0_51, Windows 2008 R2 64-bit Config had only two <Connectors> both with the address= and port= parameters set. I had yet to add the referenced IP address to any network adapter when I started the Tomcat service. The service came up, logged the failure to bind to the address/port assignments, and then deployed the webapps. So I had a functional application running, but no way to connect to test against it. I suppose one would expect this to happen, and I don't know if a lack of running connectors could be detected and a shutdown instituted, but it just seemed a little odd.
Jeff