I contacted the support people at ASUS [the manufacturer of the motherboard I’m using for the server] and they responded with a few tips. One of those was that my powersupply might be insufficient for the task at hand – and they even provided detailed product specs to make sure I found one that would be fine. Wow. I hope it works, because I’m about to order a new one – to replace my “new” one that I bought for this server especially. Ah, well, maybe I can reuse it for something…