Western Digital is trying to redefine the word “RPM” – Ars Technica

30 with 28 posters participating

• Redditor /u/Amaroko placed this WD Blue drive on an empty cardboard box, and held a Blue Yeti mic just above it while it powered on. Spectral analysis of the audio shows a 90Hz baseline90 cycles (revs) per second and 60 seconds per minute works out to 5,400RPM.
• This WD Elements 8TB drive is listed as “5400 RPM Class” on its datasheet, and its firmware reports 5400 RPM via SMARTbut it’s humming at 120HZ. 120Hz * 60 secs/min = 7,200 RPM.
  …

  Click here to view the original article.