磁盘的输出显示了各个物理磁盘（在合适的情况下包括NFS 加载）的工作情况，通常以每秒处理事务数和每秒传输的MB或KB 作为单位。
Disk output shows how busy the individual physical disks (including NFS mounts, if applicable) are, usually in transactions per second and MB or KB transferred per second.
我们将使用- m选项，该选项以兆字节为单位显示值，还有- o选项，该选项忽略缓冲区信息，以便显示更多的输出。
We will be using the options -m, which displays the values in megabytes, and -o, which suppresses buffer information, allowing a more readable output.
输入、输出都有标注，显示的数据都有单位。
Inputs and outputs are labeled and Numbers are displayed with units.
输入、输出都有标注，显示的数据都有单位。
Inputs and outputs are labeled and Numbers are displayed with units.
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