Mechanical hard drives opened a new chapter today. Western Digital released the world’s first 26TB hard drive “Ultrastar DC HC670″. At the same time as the total capacity reached a new high, the single-disc capacity also reached a record 2.6TB, so only 10 discs were needed to achieve a total capacity of 26TB. This hard drive uses a number of Western Digital’s exclusive technologies, including OptiNAND, ePMR, TSA, HelioSeal, UltraSMR. OptiNAND technology has been used in Western Digital WD Gold 20TB, Ultrastar DC HC560 20TB two hard drives (CMR), the basic UFS specification iNAND flash memory chip, but not as a cache, but to store metadata, reduce the refresh time of adjacent track interference, It can improve the storage density and read and write performance of the disc. ePMR is energy-assisted perpendicular magnetic recording, TSA is a third-order tracking and positioning system, and HelioSeal is naturally a helium-filled packaging technology. SMR shingled magnetic recording is almost everyone’s favorite, but it is really helpful for increasing capacity, and Western Digital has also built .
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