For the First Time Flash Memory's Areal Density Surpasses Hard Drive’s
It was revealed recently during the 2016 IEEE International Solid State Circuits Conference in San Francisco, that Micron’s 3D NAND flash memory has surpassed Hard Disk Drive technology in areal density for the first time. According to Tom Coughlin of Coughlin Associates, Micron’s 3D NAND flash memory was able to achieve an areal density of 2,77Tbpsi. This is more than double the 1.19Tbpsi achieved by Samsung’s flash memory in 2015.
Coughlin when on to say that “HDDs have not stopped evolving…On the other hand, flash memory is getting denser with technology announcements of 2.77Tbspi, higher than any announced HDD areal density.
This is a new development. So flash is developing and certainly getting competitive in terms of areal storage density, but the chips are still more expensive to make than disks and the raw costs of storage will likely remain less for HDDs for some time to come announcements “
According to Coughlin the highest areal density for current HDD products is about 1.3Tbpsi, however most commercial HDD products are well below that. For example, Seagate desktop hard drives have a max areal density of 850Gbpsi.
This means that while still a best case scenario based on laboratory figures, the results from Micron’s 3D NAND flash memory are a very great technological improvement. On the same note Samsung have made it known that they will be releasing 15TB 2.5inch SSD soon and Tokyo-based Fixtstars already has a 13TB 2.5inch SSD on the market selling at a price of $13,000.
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