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我标题党了 
Institute of Material Research and Engineering的学者Joel Yang博士发表论文，他发现通过在现有的硬盘磁性材料里加入氯化钠，就是普通的食盐，可以让硬盘的最大容量增加到18TB。目前的技术的最高限制是3TB。
目前的技术下，硬盘上的一个bit（not byte）需要几个半径为7纳米的磁性点来表达。Yang博士的研究发现，撒点盐进去后，一个bit可以用一个10nm的磁性点来表达。这大大提高了磁盘存储密度。
因为这项技术对现有技术改动很小，所以产品可能很快就会跟消费者见面。
Disclaimer: 你要是真的把自家硬盘拆开了朝上面撒了盐，我可不负责，是你自己看贴不仔细
Existing hard drives max out at 3TB at the moment. TDK’s HAMR promises to take that to 6TB, but Dr Yang has found a way to increase the data density of a drive to 3.3 Terabit/inch2, effectively meaning 18TB hard drives are possible.
What may surprise you is the key to this massive increase in data storage density. Dr Yang used table salt, or more specifically, sodium chloride.
Data stored on a hard drive is done so using nanoscopic magnetic grains. Typically, several of these grains (a cluster), each measuring around 7nm, are used to store one bit of information. Therefore, if you can pack them more densely together, you get more storage in the same space.
By adding sodium chloride to the mix, it has been possible to get a single 10nm grain storing one bit. Replacing several 7nm grains with one 10nm saves a lot of space and therefore ups the storage density considerably.
The good news is the use of sodium chloride can be added to existing lithography processes, suggesting it won’t take too long to get this up and running for commercial drives. So far a 1.9 Terabit/inch2 storage solution has been shown to work, but that will increase to 3.3 Terabit/inch2, and then further research and development is aiming to achieve 10 Terabit/inch2 in the future.
For us as consumers, it means the hard drive still has quite a few years of storage bumps still to come, and a greater challenge for SSDs trying to catch up with the amount of storage on offer. This also bodes well for data centers who need to cater for a never-ending storage need as more cloud services go online.
http://www.geek.com/articles/chi ... able-salt-20111014/ |
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我的母乳喂养(医院经历) (2009-1-7) 小白兔 
台湾的点点点滴滴滴 (2016-10-21) 蚝 
发表于 2011-10-16 20:23
发表于 2011-10-17 11:18
已经50TB拉！
