As much as I love Hetzner, the article is misleading. Using a single server today makes no sense whatsoever unless it's for hobby projects. It will fail. My servers at Hetzner routinely fail every few years (4-5 maybe), usually it's a hard drive, but sometimes motherboard or PSU. If it's a drive, you need to take it offline to rebuild the array, it can take a few hours. Like honestly, this article blew up my mind. I'd never use such setup in production. Just add the damn second server (or two), it's dirt cheap!
I can deal with an outage every 4-5 years. I doubt you will get around that in a managed server environment, because you will fail configuration at some point when the service will inevitably change in the same timeframe.
