Hi One last question, but important for me : ) What about the mirror or replicate vdmk file during virtual machine is running (over LAN) It cause some problem to do that.. ? The file are everytime upgraded by the virtual machine, so, modification appears all the time (every second no..?).. ? Still no problem with that.. ? just afraid of bad understanding of the solution.. When the file is everytime updated.. notification of replicate are every second too, and.. news modifications are here, before the old modification are writed no.. ? Need some help :)