The information attack on Seagate, which lags behind the competitor in the pace of helium environment introduction, continues. From the pages of the corporate blog tied to the domain name SanDisk, representatives of Western Digital Corporation talk about the achievements of their other unit - HGST, which is considered the pioneer of the use of helium in serial hard disks. Of course, one can not say that helium was never used in hard disks. In fact, it was previously used for the initial
adjustment of the servo, but after the "training" procedure, helium was replaced by air.
The gas medium is necessary for the operation of hard drives. The candidate for the replacement of atmospheric air could be hydrogen, but it is explosive, and the density of helium is seven times less than that of air, while it is inert and fairly common in nature. It was only necessary to achieve a suitable tightness of the hard disk case, so that helium did not escape during the operation of the drive.
Its main modern achievement WDC considers HGST hard disks of the Ultrastar He12 series with a capacity of 12 TB, which place eight magnetic plates in a standard-size case - precisely due to the use of a helium environment.
The previous "milestone in the evolution" of hard drives was considered to be the unification of seven magnetic plates in one body (pictured right). The company WDC has already begun to supply hard drives with the volume of 12 TB. Related Products :
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