Haha - how embarrassing! What's the term d'art for a virtual/shim file system which dynamically reconstitutes the data onto local storage as you request it, whi

Haha - how embarrassing! What's the term d'art for a virtual/shim file system which dynamically reconstitutes the data onto local storage as you request it, while presenting a false image to user-space that all the data actually is local already?