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If you really want that stuff to turn off and stay off, don't plug it directly into the wall. Plug it into a power strip with a real on/off switch and turn it off there.
I've only once had trouble with a HDD and that was decades ago when the new drive I added smashed my data every time I shut down. It turned out that it would only work properly as the primary drive, not a secondary. However, I've had more CD/DVD drives fail on me than any other part, so that's what I picked.
I don't think that word means what you think it does.
I don't know how true it is, but I've been told that HR droids routinely translate that into "Must have..." because it makes things easier for them. Of course, that means that you'll never see a whole bunch of people you'd be happy to hire, but that's not their problem, is it?