Table salt multiplies hard disk space six times
 

From the article:

"According Dr Yang, the new process could be commercialised by 2016, "when the current techniques run out of fuel and (hard drive manufacturers) need to find alternate methods" of increasing data storage space.
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This type of attitude I don't understand? They have found a superior technique to store data, and then they decide to wait until the current technique is not enough...

I suspect that it will take that long to engineer a production technique and besides, there's all those old technology hard drives to sell first.