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随着磁记录技术的迅速发展及其相关关键技术的采用,硬磁盘驱动器(HDD)的存储容量、位密度、道密度、面密度、平均寻道时间和数据传输率等主要技术性能指标均得到了大幅度的提高。回顾磁盘技术30多年的发展历史,可以说它是一部向着大容量、高密度、小型化、高速度、低成本和高可靠性的发展历史。其中,高密度技术不仅是增大存储容量的基础,更是30多年来和今后提高HDD技术性能指标的最根本的努力方向。一、硬磁盘驱动器的市场随着计算机以每年25%的速度向着小型化和轻量化方向的迅速发展,HDD的盘径日益趋小。203mm(8英寸)HDD已退出历史舞台,130mm(5.25英寸)HDD进入暮年,90mm(3.5英寸)HDD如日中天,64mm(2.5英寸)HDD势不可挡,46mm(1.8英寸)HDD迅速崛起,33mm(1.3英寸)HDD已经诞生,25mm(1英寸)HDD也将问世。据《1993年Disk/Trend Report》报道,1993
With the rapid development of magnetic recording technology and the adoption of related key technologies, the main technical performance indexes of hard disk drive (HDD) such as storage capacity, bit density, track density, area density, average seek time and data transmission rate are obtained A substantial increase. Looking back at the history of more than 30 years of disk technology development, we can say that it is a history of development toward large capacity, high density, miniaturization, high speed, low cost and high reliability. Among them, the high-density technology is not only the basis for increasing storage capacity, but also more than 30 years and in the future to improve the performance of HDD technology, the most fundamental direction. First, the hard disk drive market As the computer at 25% per year toward the direction of the miniaturization and lightweight rapid development, increasingly smaller diameter HDD Tray. 203mm (8 “) HDD Exited History Stage, 130mm (5.25”) HDD Entering old age, 90mm (3.5 “) HDD Hypertensive, 64mm (2.5inch) HDD unstoppable, 46mm (1.8inch) HDD Rapid Rise, 33mm (1.3in) HDD has been born, 25mm (1 inch) HDD will also come out. According to the ”1993 Disk / Trend Report" report, 1993