I tested four NVMe SSDs from four vendors – half lose FLUSH'd data on power loss
There is a discussion on Hacker News, but feel free to comment here as well.
This appears to be a tweet from a year ago so I'm not sure why it's being posted, that aside I don't know enough about SSDs to know why this is a bad thing or even what FLUSH(d) data is. Anyone care to break it down for the lay people in the room?