This paragraph is not logically consistent. It first states the valid values are 'dev' or 'test' then goes on to say if set to 'false'.

The server config file is at the location etc/conf/server.properties (relative to the project root).

server.env: The environment in which the server is running. This can be set to dev or test. When set to test the server will instantiate an empty in-memory h2 database for storing metadata. If set to false, the server will use the file etc/db/h2db.mv.db as the metadata store. Any changes made to the metadata will be persisted in this file.