https://www.theregister.co.uk/2020/01/28/gandi_post_mortem/

Hosting outfit Gandi has published its postmortem regarding this month's outage and concluded that while it still has "no clear explanation", the main problem was "the duration".

The mystery incident took down a storage unit in the company's Luxembourg facility at 14:51 UTC on 8 January. It wasn't until 13 January that data was restored and services were all back online, according to the postmortem published yesterday.