Multiple Sensor Magnetic Recording for Conventional and Shingled Heat Assisted Magnetic Recording

Heat Assisted Magnetic Recording (HAMR) areal density demonstrations for both Conventional (CMR) and Shingled Magnetic Recording (SMR) are presented with Multiple Sensor Magnetic Recording (MSMR), a subset of Two Dimensional Magnetic Recording (TDMR) where readers are reading from a single track of interest. The MSMR gain was taken in both linear density and trackpitch. HAMR CMR tracks preferred to take the MSMR gain in linear density to maximize areal density capacity whereas HAMR SMR tracks preferred to take the MSMR gain in trackpitch. At spinstand, 4.0 Tfpsi areal density demonstration, equating to over 7.0 TB/disk, has been achieved with HAMR SMR when combined with 3 Reader MSMR.