Available disk space is a design choice and a tough one to make as an engineering team.

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To everyone's surprise, including their own, the young architects won with a dramatic design of a great tilted disk, a very fast professional start that produced an extraordinary building 12 years later, in 2001.

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However, the new drive will be significantly slower when writing to the older 100MB disks -- because of the head design changes needed to increase per-disk capacity.

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That aging design, built around an old-fashioned spinning disk drive, can hardly be called the future of Apple.

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By adopting a sliding disk cover, the new PS3 continues with the characteristic sleek curved body design, which fits various places in the home and enables users to enjoy an array of entertainment content.

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One of the main challenges in reducing the thickness of current 7mm hard disk drives by almost 30% without compromising on its performance and stability is its spindle motor design.

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