Quite useful if you need to a new HDD.
Everything you need to know about 3TB hard drives
By Jon L. Jacobi | Nov 22, 2011
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We expect hard-drive capacity to grow over time. Now that hard drives have jumped from 2TB to 3TB, however, upgraders face some challenges: These new hard drives may have issues in some drive enclosures and in older PCs, which aren't prepared to address the entire capacity of a 3TB model. Even if you can work such storage into your system, it may not be in a single 3TB volume, but in a 2.2TB volume and a 800GB volume instead.
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The Hitachi Deskstar 7K3000 was not only the best performer in PCWorld Labs testing, but also the best bargain. It sells for about $120, compared with $150 for the Western Digital Caviar Green and nearly $200 for the Seagate Barracuda XT. That makes the 7K3000 the only drive of the three that competes on a cost-per-gigabyte basis with 2TB hard drives. One fortunate byproduct of the introduction of 3TB drives is a commensurate drop in the price of 2TB drives: 2TB units are now selling for as low as $75.
Full article => http://storage.networksasia.net/content/everything-you-need-know-about-3tb-hard-drives
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