1989 年 13 巻 S_1_PMRC_89 号 p. S1_267-271
In order to evaluate the perpendicular magnetic recording (PMR) technology from the viewpoint of computer system, a quantified relationship between the On-Line behaviour (OLB) of disk drive and its main preformance parameters is established. It is observed by this relationship that the extra-high bit dinsity potential is only one part of its advantages. Its potential on the improvement of OLB of disk drive might be of even greater importance.