Scaling tape-recording areal densities to 100 Gb/in2

recording areal densities to 100 Gb/in A. J. Argumedo D. Berman R. G. Biskeborn G. Cherubini R. D. Cideciyan E. Eleftheriou W. Häberle D. J. Hellman R. Hutchins W. Imaino J. Jelitto K. Judd P.-O. Jubert M. A. Lantz G. M. McClelland T. Mittelholzer C. Narayan S. Ölçer P. J. Seger We examine the issue of scaling magnetic tape-recording to higher areal densities, focusing on the challenges of achieving 100 Gb/in in the linear tape format. The current highest achieved areal density demonstrations of 6.7 Gb/in in the linear tape and 23.0 Gb/in in the helical scan format provide a reference for this assessment. We argue that controlling the head–tape interaction is key to achieving high linear density, whereas track-following and reel-to-reel servomechanisms as well as transverse dimensional stability are key for achieving high track density. We envision that advancements in media, data-detection techniques, reel-to-reel control, and lateral motion control will enable much higher areal densities. An achievable goal is a linear density of 800 Kb/in and a track pitch of 0.2 lm, resulting in an areal density of 100 Gb/in.