MK2431GAH and MK1231GAL achieve an areal density
This is in contrast to the story in magnetic disk where the areal density
growth has slowed significantly with the associated slow down in the improvement in its cost of storage metric.
Since the size and number of disk platters are fixed in each defined disk drive format, areal density
is really the only parameter that can be improved to increase storage capacity.
Increased areal density
from improved head and disk coating
It is likely that the rate of data storage areal density
increase in magnetic recording will start to drop gradually due to the greater difficulty in making the new technology work.
2 The world's highest commercially available areal density
in a 1.
Kryder estimates that the switch to perpendicular recording will occur sometime between 100 and 200 gigabits per square inch areal density
5-inch HDD featuring the world's highest areal density
Striving to provide more capacity per dollar, disk drive manufacturers have invested heavily in increasing the areal density
of their disks, with remarkable results.
Ed Grochowski, Executive Director, IDEMA USA, commented, "Today PMR has become a fully applied technology, responsible for the areal density
growth in leading edge disk drive products.
has grown at an impressive 60 percent compound annual growth rate, historically, and has accelerated to greater than a 100 percent rate since 1999.
However, industry requirements for increased areal density
and consumer electronic expansion will continue to drive future investment in perpendicular head technology, transition to smaller femto slider formats and conversion to larger wafer size.