中文说明：提供了现在常用的R-S码和LRC码的生成矩阵，R-S码是用来快速恢复存储在云硬盘中损坏或丢失数据的自动修补码。然而每修复一位错误，需要从所有的幸存物理存储器中读取数据，从而给网络造成很大流量。因此，LRC码用来降低网络运行开销而出现。
English Description：
The generation matrix of the commonly used R-S code and LRC code is provided. R-S code is used to quickly recover the damaged or lost data stored in the cloud disk. However, it is necessary to read data from all the surviving physical memories to fix a bit error, which causes a lot of traffic to the network. Therefore, LRC code is used to reduce the network overhead.