It seems like hard drive manufacturers are all about the bold claims this week -- hot on the heels of Hitachi's promise to deliver 4TB drives in 2011, Western Digital is doing a little chest-thumping over its "successful demonstration" of a drive with a storage density of 520 gigabits per square inch. That's more than double today's max of 200Gb per square inch, and WD says cramming bits in that tight will result in 3TB 3.5-inch drives by 2010. Hmm, 1TB less one year sooner? Storage fanboys, to the comments!

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