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Glass platters have been used a lot since the IBM "Deathstar" series. They are used in almost all 2.5 inch laptop drives.

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Heh, and they can shatter. Had a customer bring in a laptop after they dropped it and said the hard drive wasn't detected.

Taking the hard drive out and rotating it made the noise of a thousand scurrying roaches.

2.5 drives have less platters which are also smaller.

I hope everything goes well and we'll see 100TB drives.

I'm not sure whether the smaller size is an asset or liability here. There's likely some tradeoffs for manufacturing tolerances and/or thermals. (physics people speak up?)

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