Parameter RMSE [R.sup.2] [T.sub.botmax] 0.022 0.999
Areal density 0.011 0.999 Table 3: ITPS thermal optimization results.
Using perpendicular recording, scientists believe that the effects of superparamagnetism can be further forestalled, which would create opportunities for continued robust growth in
areal density at a rate of about 40 percent each year.
A likely explanation of these differences is that
areal density is a better measure of technology for disk drives than memory chip density is for processors.
Considering ballistic weight, mesh-plate bumpers maybe advantageous, as they either increase the total thickness of a bumper (in case of aluminum mesh) while maintaining the same
areal density as a monolithic aluminum bumper or facilitate improved initial breakup of projectiles because of their interaction with materials of higher shock impedance than aluminum (in the case of using steel mesh).
Table 1 summaries the average diameter,
areal density, and conductivity of the PMMA fibers before and after polymerization of PANI.
New Samsung hard drives hit one terabyte
areal densityThe addition of the new Deskstar and CinemaStar drives, which are first in a family of 1TB/platter drives, are reportedly ideal for high-performing desktop computers and the consumer electronics (CE) market and also reach an
areal density milestone, the company said.
"When LSI launched the industry's first 40nm read channel with LDPC iterative decoding last year, we set out with the vision of providing HDD customers with a low-risk, time-to-market advantage in meeting the next HDD
areal density point," said Phil Brace, senior vice president and general manager, Storage Peripherals Division, LSI.
Designed for mainstream notebook computers, the WD ScorpioA Blueao 750 GB hard drives utilize WD's leading 375 GB-per-platter
areal density and Advanced Format technology.
But even if and when magnetic media designers, particularly disk engineers, do hit the
areal density wall, tape engineers will still have many generations of capacity improvements to come, due to the 800:1 ratio in
areal density that currently exists between disk and tape design.
AIT-4 media features an
areal density of 1.17Gbit/inch2, greater than any other magnetic tape media in the world, the company claims.
Achievement of higher
areal density requires further reduction in the space between the head and the magnetic layer at higher speed.
