物理文件系统的布局如下图所示。
The layout of the physical filesystem can be broken down, as the following diagram shows.
虚拟文件系统是基础物理文件系统的抽象。
The virtual file system is an abstraction of the underlying physical file system.
DISK——指定存储存档日志的位置(物理文件系统)。
DISK - Specifies the location (the physical filesystem) to store the archived logs.
这部分简要的描述了可见元件是如何与物理文件系统布局相关联的。
This section briefly describes how the visual elements relate to the physical file system layout.
文件存储在当前Or chard系统中，可以是一个物理文件系统或者用azureblob存储。
Files are stored in the current Orchard file system, which can be either the server's physical file system or Azure blob storage.
把不同类型的存储设备和物理文件系统—glusterfs将它们称为brick—聚合为一个统一的池或名称空间。
Aggregate disparate, heterogeneous storage devices and physical file systems-what GlusterFS refers to as bricks-into a unified pool or namespace.
虚拟文件系统可以为物理文件系统、网络文件系统、或者逻辑文件系统(没有物理后备存储，如ramfs)。
A virtual file system can be a physical file system, a network file system, or a logical file system (one that does not have a physical backing store, such as ramfs).
虚拟文件系统建立了不同的基础物理文件系统到逻辑文件系统之间的桥梁，为操作系统中的其他部分提供了一致的目录树层次结构。
The virtual file system bridges the underlying disparate physical file system to the logical file system, providing a consistent directory tree hierarchy to the rest of the operating system.
它报告文件系统的所有层的使用率，包括逻辑卷管理器(LVM)、虚拟内存和物理磁盘层。
It reports on all layers of file system utilization, including the Logical Volume Manager (LVM), virtual memory, and physical disk layers.
大多数文件系统都通过缓冲区缓存来相互通信，这种缓存通过缓存最近使用的数据来优化对物理设备的访问。
Most of the file systems communicate through a buffer cache, which is a cache that optimizes access to the physical devices by caching recently touched data.
这包括物理体系结构、逻辑磁盘排列，以及逻辑卷和文件系统配置。
This includes the physical architecture, logical disk geometry, and logical volume and file system configuration.
它把数据分散在几个物理服务器上，但是用户作为一个与UNIX相似的文件系统资源操作它。
It spreads data over several physical servers, but the user treats the amalgam as one UNIX-like file system resource.
正如前面所讨论的，ZFS合并了卷管理功能来提取底层物理存储设备到文件系统。
As discussed earlier, ZFS incorporates a volume-management function to abstract underlying physical storage devices to the file system.
本地虚拟化的应用程序也时常借助于虚拟注册与文件系统来保持其与用户物理机器的隔离与自身的纯净。
Locally virtualized applications also frequently make use of virtual registries and file systems to maintain separation and cleanness from the user's physical machine.
它将各种文件系统连接到不同的物理存储介质。
It joins disparate file systems of differing types to different physical storage mediums.
图14显示逻辑卷、它的物理卷、文件系统和卷组。
Figure 14 shows the logical volume, physical volume, file system, and volume group.
EVMS可以看见“总览图”；它可以确切地知道每件东西是如何分层的，从文件系统一直到底层保存数据的物理磁盘。
EVMS can see the "big picture"; it can see exactly how everything is layered, from the filesystem all the way down to the physical disks holding the data.
文件的结构和大小取决于底层文件系统 —即把文件数据存储到物理设备上的子系统。
The structure and size of a file depends on the underlying file system—the subsystem that persists the file data to a physical device.
如果文件系统数据结构正好与底层物理分区大小一致，对4096字节数据结构的读写会产生对单一扇区的读写。
If the file system data structures happen to align perfectly with the underlying physical partition size, a read or write of a 4096-byte data structure results in a read or write of a single sector.
一个不常用并且较新的特性是RAM磁盘，它允许使用物理ram存储文件系统。
A little used and relatively new feature is the RAM disk, which allows for the use of physical RAM as the storage for a file system.
或者，您可以将CD-ROM文件系统添加到WPAR，从而允许您使用附加到该物理服务器的 CD-ROM在 WPAR 中安装软件。
Or, you can add a CD-ROM file system to the WPAR, which enables you to use a CD-ROM attached to the physical server to install software on the WPAR.
因为他们将数据库数据映射到底层物理存储(原始磁盘、文件系统、卷)，在一个新的平台中理解它们对于dba来说很重要。
Because they map database data to underlying physical storage (raw disks, file systems, volumes), understanding them in a new platform is critical for DBAs.
这个initrd 会作为RAM中的临时根文件系统使用，并允许内核在没有挂载任何物理磁盘的情况下完整地实现引导。
This initrd serves as a temporary root file system in RAM and allows the kernel to fully boot without having to mount any physical disks.
在清单8所示的mount脚本中，可以在底部看到archivemount文件系统，在顶部看到Linux挂装的典型物理设备。
In the mount transcript in Listing 8, you can see the archivemount file system at the bottom and the typical physical devices mounted by a Linux machine at the top.
如果源文件系统没有修改，快照不会在其自己的物理磁盘空间中存储任何文件，并且具有的内容与原始文件系统相同。
If the source is not modified, the snapshot does not store any of the files in its own physical disk space and has the same content as the original file system.
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。
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.
它由许多元素组成，这些元素在文件系统和物理数据中跟踪条目之间的关系(比如文件名)。
It consists of a number of elements that track the relationship of the entry to other entries in the file system as well as physical data (such as the file name).
类似于nfs，每个节点都将文件系统看作本地的物理附加文件系统。
Like NFS, each node treats the file system as if it were local and physically attached.
物理参数包括CPU温度、内存与文件系统利用情况、接口利用、电压读数，以及其他物理值。
Physical parameters range from the temperature of CPUs, utilization of memory and file system, interface utilization, and voltage reading, among other physical values.
例如，在图1所示的物理到逻辑映射布局中，最大的磁盘是80gb的，那么用户如何创建更大(比如150gb)的文件系统呢？
For example, in the layout of physical-to-logical mapping shown in Figure 1, how could the user create a filesystem of, say 150gb, since the biggest disk is 80gb large?
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