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Seagate, TDK show off HAMR tech designed to jam more data into hard drives |
October 01, 2013
Seagate Technology will demonstrate HAMR, a technology it's counting on to fit more data onto hard disk drives, at the Ceatec show this week.
HAMR (heat-assisted magnetic recording) uses heat delivered by a laser to help write data onto the surface of HDDs (hard disk drives). This allows drives to write bits of data closer together so more information can be stored in a given amount of space on a disk platter. At this week's huge electronics show in Tokyo, in partner TDK's booth, Seagate will demonstrate HAMR on a 2.5-inch, 10,000-rpm HDD designed for enterprise blade servers.
Seagate expects to start selling HAMR drives in 2016, Chief Technology Officer Mark Re said. The technology, which other HDD vendors are also developing, has been in the works since the middle of the past decade. But that's not very long for new hard-drive technologies, Re said, citing more than 10 years of development for NAND flash.
Conventional HDDs are expected to run into a wall on data density about the time manufacturers have reached about 1Tbit per square inch, per platter. (Current drives pack in about 750Gbits per inch.) Hard drives store data by changing the magnetic polarity of cells on the disk, and smaller cells are more likely to turn unstable and change polarity. Cells' ability to hold the charge they've been set with is called coercivity, and HAMR is one technique to increase it, IDC analyst John Rydning said.
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Link: http://www.pcworld.com/article/2050860/seagate-tdk-show-off-hamr-to-jam-more-data-into-hard-drives.html#tk.rss_all
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