Before you can share scene data between a macOS database and macOS, Linux, and Windows clients, you must configure the macOS database server appropriately.
Toon Boom Harmony 15.0 uses NFS (Network File System) to share files between macOS and Linux computers. You must use NFS to export directories from the server so clients can mount them and share the contents.
If your macOS server will have macOS or Linux clients, you must export the
USADATA folders using NFS. The clients will then need to be configured to mount those exported folders from the server.
At this point, reboot the server so all of the services which you have just configured will start up.