The capacity density of mechanical hard disk in 2022 remains at 1.1tb/inch, which is less than that in 2015 From Tom Gardner

The following is the The capacity density of mechanical hard disk in 2022 remains at 1.1tb/inch, which is less than that in 2015 From Tom Gardner recommended by recordtrend.com. And this article belongs to the classification: Hardware equipment industry.

Although it is undeniable that the storage capacity of mechanical hard disk has been slowly increasing, and now 20tb has been put on the market, at the recent IEEE technical conference, expert Tom Gardner pointed out sharply that the unit storage density of mechanical hard disk has been reversing for a long time in the past few years. As can be clearly seen from the following chart, the current capacity density of mechanical hard disk remains at 1.1tb/inch, which is lower than the highest level of 1.3tb/inch in the industry in 2017 and 1.2tb/inch in 2015, which is 7 years ago.

Some friends may wonder why the disk density is low and the total capacity is increasing. This is because the number of disks has increased. 20tb hard disks have been packaged with 10 disks.

For consumer hard disks, the three dimensions have standard requirements, that is, the increase of the number of disks will lead to the reduction of gap and heating, which are more difficult to control. Therefore, improving the disk density is still a more meaningful research direction.

In fact, the original intention of SMR (laminated magnetic recording) and HAMR (thermal assisted magnetic recording) is to improve the disk storage density.

According to Seagate, its HAMR hard disk can create a storage density of 1.5 ~ 2.6tb/inch, and achieve 6tb / inch by 2030, so as to achieve a 100TB 3.5-inch hard disk.

Read more about zikuai Technology: trendfocus: Q3 global HDD shipments in 2019 reached 240ebblackblaze: 2018 mechanical hard disk failure rate report backblaze: 5-year mechanical hard disk failure rate report backblaze: Q1 mechanical hard disk failure rate report in 2018 trendfocus: Q1 global mechanical hard disk shipments in 2020 were 66.5 ~ 68.1 million, with a year-on-year decrease of 14% backblaze: Q3 global mechanical hard disk failure rate report in 2017 had the highest failure rate of 4tb trendfocus: Q1 eliminated in 2021 The shipment volume of fee grade PC mechanical hard disk is 34.97 million, accounting for only 41%. Backblaze: the quality report of Q3 mechanical hard disk in 2020 shows that Seagate has the highest 4tb failure rate. Master Lu: the mechanical hard disk accounts for only 22% in the first half of 2021. Trendfocus: the total shipment volume of SSD solid state drives in Q2 was 99.6 million, 47% more than that in the same period. Trendfocus: the global shipment volume of mechanical hard disk exceeded 250 million in 2020, with a year-on-year decrease of 18% statista: it is expected that the global solid state disk will be exported in 2021 Interpretation of the volume of goods or exceeding the data of mechanical hard disk AnandTech: the global revenue of mechanical hard disk in 2015 was only 468.9 million yuan, down 17% year-on-year trendfocus: the shipment capacity of Q2 mechanical hard disk reached 350.7eb in 2021, a record

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