where are VM which are in "dicovered virtual machine"

Hi,

I've got several farm and in each one I've got a "directory"  "dicovered virtual machine".

My Pb is that when I go to the datastore in graphical mode or in ssh (/vmfs/volumes/.........) I can't see my VM which are in this "dicovered virtual machine" mode.

How can I can make it appear in my datastore ?

(as a consequence of this precedent question what is the utility of a such mode ?)

Thx