[mc32]

Platters are not made of iron (or even steel) and neither is the surface, so I’m not sure why rust comes into the picture.

[onraglanroad]

The platters used to be coated with iron oxide as the magnetic coating.

Modern ones use more exotic materials.

[mc32]

Yes but that was like 40 years ago. I think by now the phraseology should reflect reality after about forty years.

[theandrewbailey]

We still talk about "bugs" (99+% of computer defects in the past 70+ years have not been caused by insects) and "AJAX" (long after most of these requests use JSON instead of XML).

[jacquesm]

How many horsepower does your car have?

[arcanemachiner]

Ironically, I only started hearing the term being used in the past decade, as a colloquial alternative to solid-state storage.

[seanhandley]

“Phraseology” is subtly different.

You mean “vocabulary”, “terminology”, possibly “nomenclature”.