Projection of Achievable Track Density and Bit Aspect Ratio for 4 Tb/in2 Bit Patterned Media on Hard Disk Drives

To sustain market shares in the highly competitive data storage industries, continual improvements in servo performance of Hard Disk Drives (HDDs) are essential. With tight scheduling of the servo-mechanical design and evaluation cycle, an efficient integrative simulation platform is needed to evaluate and conduct fast verification of target specifications. In this paper, we propose a simulation platform for modelling, simulation, and control of next generation of ultra-high storage density HDDs. A case study is conducted to predict the achievable track density with appropriate Bit Aspect Ratios (BARs) for 4 Tb/in areal density. Our simulation results show the effectiveness of the proposed simulation platform in efficient estimation of the achievable tracking performance and achievable Track-Per-Inch (TPI) to support next generation of magnetic recording technologies.