I just spent 10 or so minutes and it looks like they do use ECC, and per https://news.ycombinator.com/item?id=2786695 https://news.ycombinator.com/item?id=27866

I just spent 10 or so minutes and it looks like they do use ECC, and per https://news.ycombinator.com/item?id=2786695 https://news.ycombinator.com/item?id=2786695 see ECC corrections reported in their log files.