Comment by unnouinceput

Quote: "Then I manually yanked the cable. Boom, data gone."

He never said what cable he yanked. If he did it to internal one that goes from PSU to the drive then that's a very niche test, not relevant. But if he did it to the one from wall socket to the PC then yeah, then that's a good test.

Regarding this, first of all Raymond Chen warned us more than a decade ago that vendors lie all the time about their hardware capabilities. He had one test with exactly this on flushing, where the HDD driver (written by the manufacturer of course) was always returning S_OK, regardless of whatever. Do note that this was in a time when HDD's were common, not SSD's.

Secondly, I always buy a PSU that is more than double in power for the system. If, let's say, the system has a 500W requirement, my PSU for that system will be at least 1200W. This will definitely have big capacitors to keep your system alive 2 seconds after the power goes off. Those 2 seconds might seem small to us, but the drives, as much as lying assholes as they are to OS, will still correctly flush pending data. Never experienced data loss going this route.