Слева обчная PMR-головка, а справа головка HAMR со встроенным лазером для подогрева поверхности

Seagate hinted at the imminent appearance of the HDD with a capacity of 24 TB

In a meeting with investors this week, Seagate CEO Dave Mosley said that the introduction of heated platter recording (HAMR) technology will bring a leap forward in expanding hard drive capacity. In particular, the company will skip the release of a 22 TB HDD and will release a model with a capacity of 24 TB after the 20 TB drive.

On the left is a conventional PMR head, and on the right is a HAMR head with a built-in laser for surface heating

On the left is a conventional PMR head, and on the right is a HAMR head with a built-in laser for surface heating

Also, the head of Seagate stressed that the introduction of HAMR should not lead to an increase in the cost of HDD in terms of the cost of storing one gigabyte of data. Quite predictably, the use of HAMR technology will increase the cost of manufacturing hard drives, because this technology implies the integration of a semiconductor laser into the recording head. Thus, all other things being equal, a 20 TB traditional PMR disc will be cheaper in cost than a 20 TB HAMR disc. However, the company intends to change this rule.

To reduce the cost of HAMR drives, Seagate plans to migrate as many models as possible in its product portfolio to the new recording technology. According to the company’s calculations, this will reduce the cost of hard drives with lasers in the heads. In addition, the savings are also seen in the reduction of plates and heads in a number of models with a smaller capacity. For example, Seagate says that if during the production of 12-TB and 16-TB HDDs it is possible to remove one plate and a pair of heads and present the corresponding capacities in the HAMR version, then there will be no need to increase the price in any case.

Finally, Seagate expects to increase HDD capacity faster than Western Digital. The Seagate CEO said they are very well aware of the capabilities of the microwave-assisted recording technology (MAMR) that WDC has relied on. MAMR technology is interesting, but it will allow you to take small steps to increase the capacity, and HAMR technology will allow you to make a jump. And Seagate is ready to jump, which can probably be interpreted as an intention to release a 24 TB HDD by the end of next year.

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