https://www.douban.com/note/244813504/
http://blog.sina.com.cn/s/blog_413d250e0101jtr7.html
http://man.linuxde.net/hdparm
https://yq.aliyun.com/articles/50236
http://www.linuxde.net/2012/07/11100.html
原文：http://www.cnblogs.com/diyunpeng/p/6812555.html