The unit hangs with me on a Raspberry Pi and is equipped with 4x 2TB disks. Caution: Larger disks are not supported. A 3TB Samsung panel was not recognized. The 2TB drives are recognized without any problems and can use the Raspberry Pi as a Samba share eg for Windows computers are released. In principle, therefore, a more favorable NAS with the already assembled plates can handle. The fan is in automatic mode, although audible but not annoying. When sleeping on the couch, I would but the device men's driving. And right here is where I see the downside of this system. There is no way the unit without pressing the on / off switch to activate. Too bad, because it turns the Lord driving under the USB-connected system also after a short time. A deep standby I would have preferred, but it serves its purpose for one year and has so far worked almost perfectly.