I have 3 computers, each of them are attached to a manufacturing laser. I am trying to setup a system in which all 3 computers have their laser programs backed up to external storage, periodically and automatically. My initial idea was to use a NAS with a network switch and network all 3 of the computers to the NAS. Would this be possible? And if so is it even practical? If this is not possible, are there any other solutions I could look into for my problem? I looked into external USB HDDs, however as far as I can tell, they can not be connected to more than 1 computer at a time, so this would not work. I feel it's also important to mention, 2 of the computers are running Windows 7 Professional and the last computer is running Windows 2000 Pro (Manufacturing companies don't always like upgrading lol) There is no chance of connecting any of these PCs to the internet... it would require way too many hoops to jump through at this point. I have never manually setup a LAN so the last part to my question is would it be very difficult to setup? Please let me know if any more information is required, thank you!