Can you clarify on what kind of data you plan on storing in your (non-Wowza) server? If you plan on hosting the player and webcam capture applications on a different server, then you can absolutely do this. Your application would only need to be able to load the stream from your Wowza server (for playback), or push the stream to the Wowza server (for capture/ingest). You can look into the
live video chat application that comes installed as an example with Wowza to see how to have it point to a remote Wowza server.