Super SMR: Western Digital 26TB HDD with 2.6TB single-disk
2 min readSuper SMR: Western Digital 26TB HDD with 2.6TB single-disk
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Super SMR: Western Digital 26TB HDD with 2.6TB single-disk
Upgraded Super SMR! Western Digital’s world premiere 26TB hard drive: 2.6TB single-disk capacity.
Mechanical hard drives have 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 has been widely used by everyone, but it is really helpful for increasing capacity. Western Digital has also created an upgraded version of UltraSMR, which supports larger-sized block encoding and more advanced error correction technology, thereby increasing The width dimension (TPI) of each track, thereby increasing capacity.
In addition, the new hard drive also introduces ArmorCache write cache protection technology for the first time, which improves performance (WCE) when turned on and improves data security (WCE) when turned off.
In addition, Western Digital also released the world’s first 22TB hard drive with CMR traditional magnetic recording, “Ultrastar DC HC570” .
Western Digital HC670 26TB and HC 570 22TB have begun to send samples to some major data center customers, and will be available in batches this summer.
Western Digital also revealed that with new technologies, especially ePMR, it is steadily moving towards 30TB+ capacity.
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