While Solid State Disks (SSDs) are slowly gaining grounds in the storage market, the traditional mechanical  hard drives continue to get improved, particularly in laptop storage market.  Hitachi, continues to push the traditional hard drive’s capacity to thelimi, believing they can create a commercial 3.5-inch hard drive with a 5TB capacity by 2010. According to Hitachi, they can achieve the 5TB capacity with hard drives’ write heads that use something called current perpendicular-to-the-plane giant magnetoresistance (CPP-GMR), which pushed data density above one terabit per square inch. But it looks like Hitachi is not alone in achieving the 5TB, Fujitsu is also planning to create their own.

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