While there are disadvantages of that configuration, it can be done, and here's how to set it up. There's a variety of reasons why you might want to serve pages from a remote share, where the one I hear most often is so that ColdFusion can be run in distributed mode away from the webserver machine, where a firewall might exist between the two servers. In distributed mode rather than duplicating the application directory hierarchy on each machine so that IIS can serve static content from the "front end" and ColdFusion can serve dynamic content off the "back end", both from the same relative location under their local directory tree, you could instead use a UNC path so that ColdFusion reaches out to the webserver for the dynamic content. This allows all content to reside in one physical location while separating the application server from the webserver. I've also heard reports of wanting to use UNC paths for the document root so that a cluster of ColdFusion servers can read from a single source without worrying about synchronizing the content in multiple locations.

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