这部分提供了对坏的硬盘驱动器以及操作系统无法恢复时的总系统故障的模拟。
This section provides a simulation of a bad hard drive and a total system failure where the operating system cannot recover.
依赖于数据库管理系统和JDBC驱动器的实现，该操作会根据应用程序服务器的时区将时间戳数据写到数据库中。
Depending on the database system and the implementation of the JDBC driver, this usually results in timestamp data written in the time zone of the application server.
我们做的所有操作都是加载适当的模块来支持外置驱动器：它们应该根据需要被解注。
All we are doing is loading the appropriate modules to support the external drive: they should be uncommented as required.
把一个表放在一个物理驱动器上而把其他的表放在单独的驱动器上可以提高吞吐量和操作效率。
Having a table on one physical drive and other tables on separate drives can improve throughputs and operational efficiency.
诸如MS - DOS之类的操作系统可以加载其他设备驱动程序，例如CD - ROM驱动器，但是需要所有硬件驱动程序在启动时就已经加载上来了。
An operating system such as MS-DOS can load additional device drivers, such as CD-ROM drivers, but needs all of the hardware drivers already loaded at startup.
这导致处理查询所需的时间降低了 20%，因为可以在内存中保存更多数据，减少了对缓慢的机械磁盘驱动器的I/O操作次数。
This can cut the time required to process queries by as much as 20 percent because more data can be kept in memory, reducing the number of I/O operations to slower mechanical disk drives.
示例代码包含一个客户端驱动器，模仿在网格上的操作，用以演示write-behind缓存功能如何提高性能。
The sample code includes a client driver that mimics operations on the grid to demonstrate how the write-behind caching function increases performance.
最初，我们决定在单独的驱动器上安装操作系统，并且提供了5个可用的其他设备。
Initially, we decided to install the operating system on a separate drive, and we have five other devices available.
CD - ROM驱动器不是很适合读shapefile文件的访问模式，因此整个操作的速度会急剧降慢。
The access pattern to read the shapefile is not very favored by CD-ROM drives and, therefore, the whole operation slows down dramatically.
网络新手的经历：按下服务器(运行基于Redmond的操作系统)DVD驱动器上的Eject按钮时，它会立即弹出。
The newbie states that when he pushes the eject button on the DVD drive of a server running a certain Redmond-based operating system, it will eject immediately.
对于这里的练习，你将会在一个DriverTicketPayment系统上进行操作，其中驱动器可以通过因特网或者电话来支付他们的交通费用。
For this exercise, you will work on a driver ticket Payment System, where drivers can pay their traffic tickets either through an Internet process or by phone.
在这种情况下，可能在不同的驱动器上有不同的操作系统。
In this case it would be possible to have different operating system on different drives.
进程在操作系统看来就是在内存里或硬盘驱动器上执行的程序。
Processes are identified by the operating system as programs that execute in memory or on the hard drive.
物理硬盘可以完全不同—例如，尽管一个IDE驱动器被模拟为客户操作系统，物理硬件平台可以使用一个串口ata (SATA)驱动器。
The physical hardware can differ greatly-for example, while an IDE drive is emulated to the guest operating systems, the physical hardware platform can use a serial ATA (SATA) drive.
这样一来，就可以最大限制地减少处理像文件系统大小或软件驱动器这类占用修复时间的操作。
In this way, you minimize the need to manipulate things like file system sizes or software drivers that could compound the time to get things up and working again.
我们将以附加的4MM磁带驱动器作为第3层存储，因此需要在操作系统级别配置此驱动器。
As we will be using the attached 4mm tape drive as a Tier 3 storage, we need to configure the drive on the OS level.
例如，一个15,000RPM驱动器的读操作需要大约3.5毫秒的平均寻道时间，写操作则需要大约4毫秒。
For example, a 15,000 RPM drive has an average seek time of approximately 3.5 milliseconds for reads and 4 milliseconds for writes.
访问操作系统提供的内存地址要比读取(物理内存中的)常驻地址慢很多，因为必须硬盘驱动器加载它。
Accessing a memory address that has been swapped is a lot slower than reading a resident (in physical memory) address because it must be loaded from the hard drive.
应用程序的界面是用户友好的，你可以立即开始扫描，不仅你的移动设备，同时也是本地驱动器和操作系统。
The interface of the application is user-friendly and you can instantly start scanning not only your removable devices, but also the local drives and the operating system.
可以在Windows 操作系统中，或者在DOS命令提示符下，完成这些驱动器映射。
These drive mappings can be done from Windows or from the DOS command prompt.
可以从支持的设备(如软盘驱动器、CD、USBkey或主驱动器上的微小分区)执行初始引导步骤，然后使用外置驱动器进行其他操作。
You can perform the preliminary boot steps from a supported device such as a floppy drive, CD, USB key, or a tiny partition on the main drive, and then use the external drive for everything else.
Logicalc：一个RAID0 7200r pm驱动器，用于操作系统。
有些计算机系统都配备了用于操作系统和应用程序经常光盘驱动器的固态驱动器。
Some computer systems come outfitted with solid-state drives for the operating system and regular disc-drives for applications.
主机操作系统可作为盘驱动器操作系统下的任务运行。
The host OS and the disk drive operating system can be run on a single processor.
一旦你决定要恢复什么类型的文件，该工具允许您选择要扫描的驱动器，以及保持一个眼睛如何扫描操作的进展。
Once you have decided what type of files you want to recover, the tool allows you to select the drive to be scanned, as well as to keep an eye on how the scanning operation progresses.
根据处理器速度，磁盘控制器，硬盘驱动器和操作系统版本，这对于每台机器无疑是不同的。
That will undoubtedly differ for each machine, based on processor speed, disk controller, hard drive, and operating system version.
此操作全部嗣继承的数据移动到可移动驱动器上的加密分区和更换用符号链接的原始入口。
This operation entails moving all the data to the encrypted partition on the removable drive and replacing the original entry with a symbolic link.
它提供适合希望操作PC不使用硬盘驱动器，或在所提供的预安装环境来执行各种任务，用户的确切工具箱。
It offers the exact toolbox for users that want to operate a PC without a hard drive or to perform various tasks in the provided pre-installation environment.
作为一个只有几个伺服驱动，米兰驱动器配有操作所需的所有组成部分在一个住房。
As one of only a few servo drives, the Milan drive is equipped with all components required for operation in one housing.
作为一个只有几个伺服驱动，米兰驱动器配有操作所需的所有组成部分在一个住房。
As one of only a few servo drives, the Milan drive is equipped with all components required for operation in one housing.
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