硬盘驱动器的结构表面的磁盘媒体actuator锭头部形态HDD汽车磁数据媒介涂层磁脉冲位元

 
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即使如此,虽然硬盘工程师要放很多排在某一模式标准"slimline"硬盘组成要素仅限于1英寸高,这就限制了多少排列,可以在一个单一的单位. 当然,工程师不断致力于减少所需手续盘之间,就可以增加一盘驱动器的水平.

磁模式,包括你的数据记录媒介非常薄的一层的硬碟表面的排列; 大量的物质被称为基质片,但并未与媒体支持层. 要适当,要严格基层物质,容易同、薄、稳定、惰性层,并现成便宜. 最常用的材料一向是铝合金盘,全部符合这些标准.

由于旋转盘的方式与阅读/写头只以上这些浮动,必须格外受欢迎,并顺利单位因此铝替代,如玻璃、玻璃合成、镁合金已提出. 现在正越来越有可能合成和玻璃与玻璃将下基层锣标准. 铝盘相比,玻璃屏的好处是:

  • 质量:
  • 改善僵化:
  • 薄盘:
  • 热稳定性:

一个缺点是玻璃与铝脆弱,尤其非常薄弱.

这些物质的原子排列是形式的基础,是媒体的实际记录保存. 媒体层是非常薄的涂层,实际是磁性材料存储数据. 它通常只在少数millionths英吋厚.

硬盘用旧媒体的氧化. 媒体使用氧化便宜,但也有若干重要缺陷. 第一,这是软物质,容易损坏了接触阅读/写头. 二是只用于相对低密度储存. 形成良好的老硬盘与较低的数据密度,但由于厂商寻求包更多的数据纳入同一个空间,氧化没有达到任务:颗粒氧化成为太大的小磁场的新设计.

今天的硬盘用薄膜媒介. 薄膜由媒体非常薄应用于磁性材料表面的排列. 特殊的制造技术是用来存放媒体对盘材料.

比媒体氧化物、薄膜和媒体更顺利制服. 磁特性也有很大的优势,让更多的数据,进行相同的空间. 在应用磁性媒体,每片表面通常复盖有薄、防护、碳层作. 在此之上增加了超薄层较大. 这些材料是用来保护光盘在事故所造成的损害与异物的首长或其他可能进入推动.

 

Sample Chapters from book DATA RECOVERY WITH AND WITHOUT PROGRAMMING by Author Tarun Tyagi, translated using machine translation. See original English contents on Data recovery book pages.

Data Recovery with & without Programming


Publishers of the Book
Number of Pages
ISBN
Price of the Book


BPB Publications, New Delhi, India
540
81-7656-922-4
$69.00 (Including Shipping Charges, Cost of Book and Other expenses, Free Source Code CD included with the Book)





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