Hitachi's Global Storage team have begun spinning what they claim is the world's fastest notebook hard drive with on-board automatic data encryption technology. The Travelstar 7K200 rotates at a desktop-level 7,200rpm.

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The 2.5in drive is available in capacities ranging from 120GB to 200GB. It connects across a 1.5Gbps or a 3Gbps SATA bus.

Hitachi said it's also offering an encryption-free version. It claimed both versions consume the same amount of power and make as little noise as a slower 5,400rpm drive - the type of hard disk most commonly found in notebooks.

The Travelstar 7K200 will be available to buy this summer for around $249.