We capture the current disk and volume group configuration with several LVM commands.

我们用几个LVM命令捕获当前的磁盘和卷组配置。

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Part 3 of this series focuses on the application layer as you move on to file systems, using various commands to monitor and tune your file systems and disk I/O subsystems.

本系列文章的第 3 部分将在您继续研究文件系统的同时，重点关注于应用程序层，并使用各种命令以监视和优化您的文件系统和磁盘 I/O 子系统。

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With these generic driver interfaces, you can directly send SCSI commands to SCSI devices, bypassing a file system that is normally created on a SCSI disk and mounted under a directory.

通过这些通用的 驱动器接口，您就可以将 SCSI 命令直接发送到 SCSI 设备，而不需要经过在 SCSI 磁盘上创建（并装载到某个目录）的文件系统。

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And if you've ever heard the word driver software that you install in your computer so that your computer, your operating system, Windows or Mac OS, knows how to talk to that piece of hardware, it's that driver software that then empowers the operating systems to send those commands as well, up, the data is laid out on the disk.

并且如果你听说过安装到,电脑中的驱动软件这个词的话，你的操作系统，比如Windows或者是苹果操作系统，通过这个驱动软件我们的电脑，才能知道如何与这个硬件进行通信,正是因为这个驱动软件，操作系统才能根据数据，左右移动的指令来读取磁盘里的数据。

哈佛公开课 - 计算机科学课程节选