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Turns out there are several possible deploy environments for a Rails application. There is not necessarily one standard or best one at the moment, different people use different ones in different circumstances.
Jonathan Rochkind at Hopkins uses mongrel, mongrel_cluster and Apache mod_proxy and mod_proxy_balancer on a unix system for his deploy environment. He went down this road because it was what was recommended by the [http://www.pragprog.com/titles/rails2 Rails Agile Development book]. We may explore other deploy enviroments (such as 'passenger') in the future. We would definitely not be optimistic about running Umlaut on Windows.
Since jrochkind is writing this documentation, he can only tell you how to do it how he did. You do need to have a verison of Apache that includes mod_proxy_balancer (> apache 2.2? ), but if you do, jrochkind is fairly happy with the solution.