地球上有三个地方有高能物理设备来制造这些，这就是那三个地方。
There are three places on the planet that have high energy physics equipment in order to make these, and these are the three places.
确定并获取对所需物理设备的使用。
Identifying and obtaining the use of needed physical facilities.
类似地，也无法从虚拟实例中访问物理设备。
Similarly, accessing the physical devices is not possible from virtual instances.
还可以使用rmdev彻底删除逻辑和物理设备。
Or, you can delete the logical and physical devices with the rmdev command outright.
它连接到物理设备，并将资源分配给各个逻辑分区。
It connects to physical devices and distributes the resources to logical partitions.
可以使用物理设备、虚拟机或云服务实现这些结果。
You can achieve these results using a physical appliance, a virtual appliance, or a cloud service.
下一步是确定每个节点的哪个物理设备连接每个网络。
The next step establishes what physical devices from each node are connected to each network.
在基线上，我们看到必须从物理设备多读11%的页。
At the bottom line we see an additional 11% pages had to be read from the physical device.
设备映射器的作用就是将这些名称正确地映射到物理设备。
It is the device mapper's job to map these names correctly to the physical devices.
AIX常会创建指向对应的物理设备的逻辑设备。
AIX often creates logical devices that point back to physical counterparts.
它们是一些可与物理设备(比如hba)链接的特定驱动器。
These are the specific drivers that interface to the physical devices such as HBAs.
对特定设备的访问由与它相关联的传统物理设备驱动程序处理。
The access to a specific device is handled by traditional physical device driver associated with it.
缓冲区缓存之下是设备驱动程序，它实现了特定物理设备的接口。
Below the buffer cache are the device drivers, which implement the interface for the particular physical device.
而对原始设备的访问则没有缓存，导致物理设备上的直接读写操作。
An access to a raw device avoids the cache, resulting in direct read and write operations on the physical device.
使用更少的硬件资源意味着花在物理设备的电力和冷却方面的钱更少。
Fewer hardware resources mean less money to spend on electrical power and cooling for physical devices.
这就允许在其中缓存请求，减少访问物理设备的次数，加快访问速度。
This allows the requests to be cached there for faster access (rather than going back out to the physical device).
但是今天，在我们不断虚拟化的世界中，物理设备和服务已经消失不见。
But today, in our increasingly virtualized world, physical devices and services disappear into the ether.
无论是另一个物理设备、可移动存储设备或另一台计算机，都是可行的。
It is largely irrelevant whether that is another physical device, a removable storage solution, or another machine altogether.
两种操作系统都支持各种物理设备端口，比如并口、串口和USB接口。
Physical device ports such as parallel, serial, and USB are supported.
DMS中所使用的容器则必须是预分配的文件或物理设备，如硬盘驱动器。
The containers used in DMS must be a pre-allocated file or physical device, such as a hard disk drive.
AIX 6.1的这个新特性有助于减少支持逻辑环境所需的物理设备数量。
This new feature of AIX 6.1 has the effect of reducing the amount of physical devices necessary to support your logical environments.
第一级包括性能对象，它是可以为物理设备建模，或者抽象系统中组件的单元。
The first level consists of the performance object, which is a unit that can model a physical device or abstract component in a system.
这同其他工程学(例如机械工程学)所设计并构造的物理设备存在很大的不同。
This is quite different from the physical devices that mechanical engineers design and construct, for example.
为了提高效率，Linux对请求进行缓存，避免将所有请求发送到物理设备。
For efficiency, Linux maintains a cache of the requests to avoid having to go back out to the physical device for all requests.
当集群服务开始建立节点，它首先将指定为Quoru m盘的物理设备上线。
When the cluster service on the forming node starts, it first tries to bring online the physical device designated as quorum disk.
底部是物理设备，提供了对网络的连接能力(串口或诸如以太网之类的高速网络)。
At the bottom are the physical devices that provide connectivity to the networks (serial or high-speed networks such as Ethernet).
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.
如前所述，容量规划是这里的一个重要元素，它规定某个工作负载集所需的物理设备的数量。
As stated earlier, capacity planning is an important element here and will dictate the number of physical devices that are required for a set of workloads.
冗余硬件不仅限于上面正在运行架构的物理设备，还有相关的基础设施，比如电源和冷却装置。
Redundant hardware is not limited to only the physical machines that the architecture is running on, but also the associated infrastructure such as power and cooling facilities.
至少有一个逻辑接口与这个物理设备链接，比如en0或et0，在逻辑接口上配置IP地址。
Then, at least one logical interface will be linked to this physical device, such as en0 or et0, on which the IP address will be configured.
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