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Shingled Magnetic Recording Using HAMR Technology
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DOI：10.1109/TMAG.2025.3612965.png)
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Abstract
En 中文
The two writing architectures that are primarily employed in modern magnetic hard disk drive (HDD) storage devices are conventional magnetic recording (CMR) and shingled magnetic recording (SMR). Although SMR offers higher areal density capability (ADC) compared with CMR, it compromises random access write/read performance. Furthermore, the two main writing processes that are used in HDDs are heat-assisted magnetic recording (HAMR) and flux control microwave-assisted magnetic recording (FC-MAMR). These two writing processes are completely different from each other, with the HAMR method offering higher ADC than MAMR. In this work, we compare ADC between CMR and SMR using FC-MAMR and HAMR drives. Since ADC gain is almost the same in FC-MAMR and HAMR in our design, the highest capacity is found to be achieved using HAMR-based SMR drives.
Keywords:
Heat-assisted magnetic recording
Magnetic recording
Switches
Writing
Magnetic tunneling
Correlation
Training
Shingled magnetic recording
Perpendicular magnetic recording
Magnetic flux
Heat-assisted magnetic recording (HAMR)
microwave-assisted magnetic recording (MAMR)
perpendicular magnetic recording (PMR)
shingled magnetic recording (SMR)
Journal
IF:
1.9
Papers:
279
Citations:
2.6W