Not to be outdone by Hitachi's breakthrough in hard disk drive technology that could see storage capacity rise to 4TB by 2011
, Western Digital has claimed to have created the world's highest density hard drive platter, hitting 520Gb per square inch
– more than double today's typical data density of 200Gb per square inch.
The company achieved the higher density using its own perpendicular magnetic recording (PMR)/tunneling magneto-resistive (TuMR) head technology, touting “the extendibility of PMR-TuMR head technology generations into the future,” even though earlier this week Hitachi said that the technology wouldn't be up to the task of reading data off a 500Gb per square inch platter.
According to WD, this level of density produces 3.5-inch hard drives capable of storing 640 GB-per-platter and, based on the industry's current density growth rate of more than 40 percent per year, the company says we can expect 3TB hard drives “in the 2010 timeframe.”