The various network device drivers run at the interface layer, which receives and transmits data from and to the physical link.
各种网络设备驱动程序在接口层运行，该层从物理链路接收数据，并向物理链路传输数据。
When first setting up your systems, start from the bottom (the physical layer) as you configure your disk, the device layer, its logical volumes, file systems, and the files and application.
在第一次设置系统时，对于磁盘的配置，可以从最底层(物理层)开始，然后是设备层、逻辑卷、文件系统、文件和应用程序。
Even your physical volumes themselves are part of the logical layer, as the physical layer only encompasses the actual disks, device drivers, and any arrays that you might have already configured.
甚至物理卷本身也是逻辑层的一部分，因为物理层仅包含实际的磁盘、设备驱动程序和任何可能配置的阵列。
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