这是为了在不安装所有必要应用程序的情况下实现操作系统还原。
This is to enable a restore of the OS without having to reinstall all the application required.
这个库接口并不依赖于文件系统的实现细节，但是也可以在其他内核接口稍有不同的操作系统上使用。
The library interface does not rely on implementation details of the file system, but can also be used on other operating systems that might have a different kernel interface.
此外，不同的操作系统可能以不同的方式实现内存管理。
Moreover, different OSs may implement memory management differently.
不过，您可能没有用一些时间去思考它们在您的操作系统中是如何实现的。
However, you may not have taken the time to think about how they might be implemented in your operating system.
如果您打算使用多个操作系统为用户提供服务，那么需要在测试计算机上实现某种形式的虚拟化。
If you have any intention of serving users with more than one OS, you'll want a test machine with some form of virtualization on board.
这种抽象支持在单一物理资源上运行多个操作系统和应用程序栈，从而实现更高程度的资源利用。
This abstraction enables multiple operating systems and application stacks to run on a single physical resource, thus enabling higher levels of resource utilization.
这种技术在操作系统本身之上实现服务器的虚拟化。
This technique virtualizes servers on top of the operating system itself.
这包括在代码中不同函数边界由操作系统实现的那些探测。
Those exposed by the operating system on the boundary of different functions within the code are covered.
根据您使用的操作系统，实现上述操作的步骤会有所不同；您只需要对操作系统使用合适的命令或工具。
The steps to do this differ depending on your operating system; you simply need to use the appropriate command or tool for your operating system.
使用这两种文件句柄类型，服务器实现可以具备与服务器上操作系统的文件系统相匹敌的能力。
With these two file handle types, the server implementation can match the abilities of the file system at the server along with the operating system.
如果主机操作系统和来宾操作系统运行于相同的处理器架构之上，那么您可以使用QEMU加速器(KQEMU)实现近似本地的性能。
If your host and guest operating system are targeted to the same processor architecture, then you can speed things up to near native performance using the QEMU accelerator (KQEMU).
引起性能问题的原因有很多种，比如应用程序的实现方式、应用程序的操作系统、系统使用的远程资源，或者所有这些因素的结合。
Performance problems can be related to how an application is implemented, its operating environment, the remote resources that the system USES, or all of these.
要再次注意的是，这个结构与操作系统类似：内核提供最基本的服务，而通过库来实现其它大多数服务。
Note, again, that this setup is similar to an operating system, where the kernel offers the most basic services and most other services are implemented through libraries.
可以通过在管理操作系统上的标识时使用ID来实现这个一致性。
You can enforce this consistency by using IDs when you manage the identities on the operating systems.
不幸的是，如果您的操作系统不具备与此完全类似的功能，那么没有任何办法来实现这个系统调用。
Unfortunately, if your operating system didn't provide a good analogue to this, there was simply no way to implement the system call.
它不是为了为传统数据库引擎提供一个接口，而是用恰当的、操作系统特定的后端以实现真正的持久性。
It was not meant to interface to traditional database engines, but rather USES appropriate OS-specific back ends for the actual persistence.
在生产环境中，这通常是以LDAP实现的注册表、数据库或操作系统的功能。
In a production environment, this is typically the function of a registry implemented in LDAP, a database, or an operating system.
服务组件：实现服务，可能通过使用“可操作系统”层中的一个或多个应用程序来进行。
Service components: Realize services, possibly by using one or more applications in the operational systems layer.
不过，大多数操作系统实现一个与文件夹相关的规则来控制创建新文件的ACL的方式。
However, most operating systems implement a folder-related rule governing how a new file's ACL is created.
这可以使用已知的方法实现，如在自已的系统上放置部署管理器和使用操作系统故障转移机制(例如，用于AIX的HACMP)来保护系统。
This can be done using known techniques, such as placing the Deployment Manager on its own system, and protecting that system with an operating system failover mechanism (for example, HACMP for AIX).
这个内存扩展因数为操作系统提供了有关用户尝试实现的有效内存容量的输入，即OS应尝试纳入内存的数据量。
This memory expansion factor provides input to the operating system on the effective memory capacity the user is trying to achieve, and thus, the amount of data the OS should try to fit into memory.
对于运行在用户空间中的程序，具有公共安全性限制，它们在几乎所有现代操作系统的内核中实现(以一种或另一种方式)。
For programs running in user space, there are common security restrictions implemented in the kernel of almost all modern operating systems (in one fashion or another).
要实现RTSJ需要来自底层操作系统及JRE组件的广泛支持。
Implementing the RTSJ requires broad support from the underlying operating system as well as components of the JRE.
由于NOVA实现了全面虚拟化，因此支持未更改的来宾操作系统。
Because NOVA implements full virtualization, unmodified guest operating systems are supported.
在一定程度上讲，上述的实现与操作系统如何处理作业上下文转换任务非常近似。
In a way, this is similar as to how an OS handles context switches.
随着越来越多的智能手机可实现相同的应用，智能手机操作系统之间的差异和重要性也将逐步降低。
As more smartphones adopt the same approach, the distinctiveness and importance of the smartphone OS will naturally diminish.
与其他计算平台一样，WebSphereDataPower也拥有一个软件栈，其中包括操作系统和用于实现一个功能集的软件组件。
Like any other computing platform, WebSphere DataPower has a software stack, which includes operating system and software components that implement a set of capabilities.
在这一期中，您已经了解了如何在Linux操作系统上使用开源软件实现WebSphereMQ的高可用性。
In this installment, you have seen how to implement high availability for WebSphere MQ using open source software on the Linux operating system.
您还可以通过像OpenVZ这样的开源产品，在操作系统虚拟化的环境中实现动态迁移。
You can also find live migration in the context of operating system virtualization through open source products like OpenVZ.
这个协议已经在许多不同的操作系统中实现—从windows到unix甚至到大型机环境。
The protocol has been implemented in many different operating systems, from Windows to UNIX and even to mainframe environments.
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