Upon startup, httpd expects to find the Server Configuration File as conf/httpd.conf in the ServerRoot directory.
Other Server Configuration directives may use this directory to give relative paths for locations of files.
dir is an absolute path of a directory on your
Only one ServerRoot directive is allowed in the server configuration file.
This would set ServerRoot to the directory /usr/local/httpd.
This would set ServerRoot to /web1/http.