When the Image Cache does not have access to the Master project folder, images must be loaded from a remote instance of the Image Cache that does have access to the Master project folder. This scenario typically occurs when the Master project folder is hosted on a server in the DMZ and the web server is located outside of the DMZ. When a server does not have direct access to the Master project folder, set IS_REMOTE to true and BASE_LOCATION to the URL of a remote instance of the Image Cache, as follows:

The remote Image Cache is typically configured to be the one on the Accessories server, but you can use the Image Cache on any Interviewing server if you prefer.

To build some fault tolerance into your system, use ALTERNATE_REMOTE_LOCATION to specify an alternative folder that can be used if the folder named in BASE_LOCATION is unavailable. The alternative folder must be on a different server than the base folder.

You must ensure that the web server can resolve the server name in the URL when using this type of configuration. Certain network configurations require that you specify a fully qualified domain name (FQDN) or even an IP address. You can test whether the web server recognizes the server's name either by typing ping ServerName at a Windows command prompt (on the web server), or by typing the full URL into a browser on the web server.