在硬盘上存储特定数量信息的能力，主要是依靠硬盘的面密度推动的。面密度既指信息位的大小也指信息位在硬盘上的间隔。通过使信息位及其间隔变得越来越小来增加盘片上的密度，可以将更多的信息存储到硬盘上，这意味着在硬盘里面可以使用更少的盘片和零件。当前的存储技术在面 The ability to store a specific amount of information on a hard disk is driven primarily by the areal density of the hard disk. Area density refers to both the size of the information bit and the bit of information on the hard disk. By increasing the density on the disc by making information bits and spacing smaller and smaller, more information can be stored on the hard disk, meaning fewer discs and parts can be used in the hard drive. The current storage technology in the face