Recently it was mentioned only in the context of the hard drive of endless fighting between HAMR and MAMR. That if the benefits alone, that if the opponents of others, and in short, which of these technologies is better, but few know what the origin of the war is and where they are built to be chosen as a cornerstone in Seagate y Western Digital.
EAMR: first of all with heat as the primary source
We've talked about other HAMR and MAMR articles directly, so we'll assume we already have the necessary information from both, which will facilitate the understanding of everything we will explain.
EAMR is similarly a technology that started as a promising recommendation in the industry and ended up being overlooked because it was soon expired before being introduced as an upgrade to HDDs.
Its abbreviations are references The force facilitates magnetic recording, is the most reliable name for what it gets on a hard drive, because it was defined based on the ability to record the highest data in a nanometric scale.
Although the term is about energy as it is technologically and completely reliable, the fact is that the effect obtained from the head to the plate is a certain increase in temperature, that is, it emits a lot of heat. The main source of this is a high-energy laser, which eventually becomes HAMR in its most refined form.
The heat from the laser beam changes the magnetic field of the container
Already in 2015 everything was concentrated in a power environment with such high precision that with efficient integration and power delivery focused more on container characteristics and in a much smaller and more compact way than the Optical wave, it is possible to postpone the architecture and allow recording of data.
The first experiment finds that with a wavelength of 450 nm The focal point size of the container can be reduced to less than 40nm, which will increase the capacity of future HDDs. Currently both Seagate and WD (as well as the former) are able to record less than that 40nm, although improvements in this feature are unknown for sure.
In the end, EAMR is the basis of two technologies that will dominate the HDD market for at least a decade, being at the same time widely known as the original and highly compatible version of MAMR and instead the paradigm shift in the hard drive industry as we know it.
