Who has at once two new disks in the Disk Management tool, which is making a mistake. Because Windows can not "make Raid" readily thereof. This requires back selected the correct setting on the device and operation !!! the reset button are pressed. And lo and behold, suddenly become of the 2 hard drives only one (Name: "SV Safe USB Device") and the works then for Windows as a single hard disk, but is in truth a Raid (1 or 0). These can only be found, unfortunately, neither the meager guide that actually describes only the installation, nor to the support pages something. Now, if everything remains stable, I am satisfied. Although a lousy guide, but still, for the price and because fanless, 5 stars.