https://blog.wongcw.com/2018/12/10/%e8%a9%b2%e4%be%86%e7%9a%84qlc-ssd%e7%b5%82%e7%a9%b6%e9%82%84%e6%98%af%e4%be%86%e4%ba%86%e4%bd%86%e5%ae%83%e6%9c%89%e9%80%99%e9%ba%bc%e5%8f%af%e6%80%95%e5%97%8e%ef%bc%9f/