Since their introduction to the PC world, Hard Disk Drivers have been getting bigger and bigger. Technology to pack more onto the platters of a HDD keep getting better to the point where we are now seeing storage capabilities hitting half a terabyte or a whooping 500GB.
Speed on these drives have also been increasing, with speeds from the original 2,300 RPM drives up to 10,000 RPM on the Western Digital Raptor and even higher again on server / enterprise drives - things keep getting better all the time.
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