Modeling and TMR (track misregistration) budget design for head-positioning of high track-density disk drives

A design tool for track misregistration (TMR) budget of disk drives have been developed. This tool includes R/W head, disk, channel and head-positioning model. An appropriate parameter set which satisfies a given soft error rate (SER) and off-track capability (OTC), is derived using this tool. It is...

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Veröffentlicht in:	IEEE transactions on magnetics 1999-03, Vol.35 (2), p.892-897
Hauptverfasser:	Yamaguchi, T., Usui, K., Hirai, H., Tomiyama, F., Numasato, H., Hamada, Y., Shishida, K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Bit error rate Budgeting Channels Computer simulation Design methodology Disk drives Disks Electronics Error analysis Exact sciences and technology Laboratories Magnetic devices Magnetic thin film devices: magnetic heads (magnetoresistive, inductive, etc.) domain-motion devices, etc Mathematical models Mechanical engineering Memory Noise figure Noise level Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Signal to noise ratio Soft errors
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Beschreibung
Zusammenfassung:	A design tool for track misregistration (TMR) budget of disk drives have been developed. This tool includes R/W head, disk, channel and head-positioning model. An appropriate parameter set which satisfies a given soft error rate (SER) and off-track capability (OTC), is derived using this tool. It is shown that results of simulations using this tool match experimental ones. A TMR budget design for 10 Gbit/in/sup 2/ is calculated. In this design, positioning accuracy of NRRO and RRO should be 0.096 /spl mu/m (/spl plusmn/3/spl sigma/) and 0.084 pm (/spl plusmn/3/spl sigma/) respectively to achieve 31.4 ktpi.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/20.753804