Hitachi develops technology to raise the recording density of HDD to 2.5 to 5 times

Hitachi and Hitachi Global Storage Technologies (HGST) have developed the basic technology to raise the recording density all at once by improving the magnetic head of the HDD. This means that the recording density will be 2.5 to 5 times larger than the conventional one.

In other words, is there a possibility that the recording capacity of the HDD can grow dramatically?

Details are as follows.
Toward realization of 1 terabit class HDD per square inch
Developed basic technology of CPP-GMR type magnetic head

According to this release, Hitachi and HGST have developed the basic technology of the head which adopted the "CPP-GMR method" as a magnetic head to read and write HDD data.

This is based on the use of "high electron spin scattering material" that can increase the output of the reproduction signal by 3 to 4 times compared with the conventional, as a film material of the head element, and adds a technology for suppressing newly developed noise As a result, it showed the best result in the signal-to-noise ratio (S / N ratio) which is one of the factors determining the reading performance of the magnetic head.

By doing thisPerpendicular magnetic recording system, It is said that the surface recording density of 500 gigabits per square inch to 1 terabit class can be realized which is equivalent to 2.5 to 5 times the current product.

Simply thinking that in the future will HDDs with 2.5 to 5 times the capacity of the current product come out? I'm very worried.