The Inner World of the Hard Drive
This article recently appeared on ExtremeTech - and it’s about as geeky as things get - how does that little hard-drive in your PC actually work?
Well, when you think of 7200 RPM, do you realise that the outer edge of the platter is moving at nearly 50mph?
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I admit I had to skim through some of it, but quite a bit of that article is interesting reading. I’d never previously considered the outer edge of the disk travels 384 miles on the average day - I wonder if the head qualifies for air miles??
The really scary figure is how far a HDD in a TiVo/Sky+ machine goes - it’s on 24 hours a day, and travels around 3 times further than that, despite many of these PVR’s having slower 5400RPM drives.