Nice, so this setup requires 18 raspberries for 30 USB-3 hard disks, 2TB each. I know this is about hacking and fun, but I wonder if there's no more better, cer

Nice, so this setup requires 18 raspberries for 30 USB-3 hard disks, 2TB each. I know this is about hacking and fun, but I wonder if there's no more better, certainly more traditional way of attaching these external disks to some powerful computer. What about a single server and attaching them with USB-3? Power consumption will be comparable with idling processors, but I assume the overall performance will be better with a traditional x86 desktop or server processor.