Hard drives volume of 100 TB promise to release in 2025

A consortium of companies engaged in the development and manufacture of disk drives IDEMA, unveiled a plan for the development drives for the next 10 years. Using new technologies, it is planned in 2025 to go to the bar to 100 terabytes - is 10 times greater than the largest modern hard disks. The current technology PMR (perpendicular magnetic recording) planned move to a more perfect: HAMR (Heat-assisted magnetic recording), BPMR (Structured storage media) and HDMR (magnetic recording spot heating).

Today's hard drives are not observed shaft of new technologies, and it seems the limit on the amount of stored information using standard achieved. In September 2014 were the first disk technology recording overlapping tracks (SMR), but they do not allow to greatly increase the recording density. If the cells have write too tightly because superparamagnetism can occur any changes in their content.

Company Seagate считает, be able to submit a 2020 disk capacity of 30 TB using technology HAMR. It is a system that combines magnetic and magneto-optical reading record. The laser locally heats the portion of the wafer surface that reduces the tendency of the material to demagnetization surface can significantly reduce the size of the magnetic field, which stores one bit of information, and to increase the storage stability, superparamagnetism avoiding harmful effects.

Another technology offers a solution to decrease the size of the area for data storage - BPMR. Instead of the current method of record keeping for 20-30 magnetic domains is possible to use a structured region on the plate, as "Magnetic islands" where each island will store one bit of information - such technology will become possible with the development of nanolithography.

The combination of these two technologies will result in the not too distant future to technology HDMR, which will allow to achieve unprecedented density recording, in theory up to 10 Terabit per square inch.

Source: geektimes.ru/post/242080/