It doesn't distribute the bits of the file across the FS's. If you're not going to put anything on it, I imagine you could mount the mhddfs as read-only.

NFS, developed by Sun Microsystems in 1984, is a distributed file system protocol that allows a user on a client computer to access files over a network much like local storage is accessed. NFS is ...

Leil Storage announces the release of SaunaFS 5.0, redefining what’s possible for on-premise large-scale enterprise storage ...