[CentOS] "Overlay" Filesystem Mounts?

On Tue, 15 Nov 2011, Scott Silva wrote:

> In Microsoft terms that sounds like Distributed file system. I think you can
> do that under samba...

Is that the same?  I thought DFS was just about effectively having cross
server symlinks so that one folder could be on one server and another on
another transparently, but I didn't know it could effectively merge multiple
folders into one.

jh