NMIS9 will look in /usr/local/nmis9/conf for configuration files. If a required file is not found there it will use the file found in /usr/local/nmis9/conf-default.
By default several required files will not be found in /usr/local/nmis9/conf. Administrators should not edit files in /usr/local/nmis9/conf-default; instead they should copy the file to /usr/local/nmis9/conf and edit it there. Future upgrades will overwrite files in /usr/local/nmis9/conf-default and provide warnings to the administrator if settings are different in the /usr/local/nmis9/conf directory.
The files found in /usr/local/nmis9/conf-default are somewhat similar in concept to the NMIS8 /usr/local/nmis8/install directory. The big differences being that all required files were in /usr/local/nmis8/conf and NMIS8 never looked for configuration in the /usr/local/nmis8/install directory.