Growth in popularity of helium hard drives is expected. Free Technical Library News

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Helium hard drives are expected to grow in popularity

25.02.2015

HGST, a division of Western Digital, first announced hard drives with helium HDA in 2013, and began mass deliveries in 2014. Such drives have a number of advantages over traditional ones, but they have not gained much popularity yet. Partly because of the high prices, partly because Western Digital and Seagate produce disks with conventional HDA of the same capacity. But this year the situation may change.

HGST currently offers 6TB and 8TB Ultrastar He models, and they have to compete with conventional Ultrastar, WD Ae 6,3TB, and Seagate Enterprise Capacity, Enterprise NAS and Archive drives ranging from 5TB to 8TB. As already mentioned, Ultrastar He has some advantages over competitors, but they are not enough to make "helium" disks popular enough. Over the coming months, HGST plans to release a 10 terabyte UltraStar HelioSeal drive that simply has no competition in terms of capacity.

It will have seven shingled platters with a capacity of 1,43 TB, and, as the name suggests, the HDA will be filled with helium. Seagate is planning a similar solution based on six 1,66TB platters, but it will most likely see the light only by the end of 2015, which means that the new Ultrastar He will have a good head start in time to gain popularity in the market.

The release of models with a capacity of 10 TB and the increase in the production of 8-terabyte variants of "helium" disks will significantly increase the popularity of this technology in the market.

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Specialists from the University of Mersin (Turkey) offer to filter copper from wastewater using finely ground peanut husks. These wastes from Turkey's food industry amount to tens of tons. After a daily settling of water with a high content of copper in a tank with peanut husks at the bottom, 79% of copper ions pass into it, and 95% is absorbed in a week.

The optimal pH of the solution in this case is equal to five units.

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