There is a variety of causes of such failure, including disk crash, power failure, software error, a fire in the machine room, or even sabotage.
发生错误的原因多样，例如磁盘故障、电源故障、软件故障、机房火灾，甚至人为破坏。
But for this data to be useful after a disk or server crash, it must be stored on another server.
但对于在磁盘或服务器崩溃后有用的数据，必须存储在另外一台服务器上。
Crash recovery is the processing of the log files, making sure all committed transactions are written to disk and uncommitted transactions are rolled back.
崩溃恢复是对日志文件进行处理，确保所有已提交的事务被写到磁盘，所有未提交的事务被回滚。
Persistence: message servers typically support persistence by writing messages to disk in the event of a server crash.
持久性：通常，服务器崩溃时，消息服务器通过将消息写入磁盘来支持持久性。
The main goal of these tests is to ensure that the software does not crash in conditions of insufficient computational resources such as memory or disk space.
这些测试的主要目的是确保软件在计算资源（比如内存或磁盘空间）不足的情况下不会崩溃。
Many older file systems lack journals, which often means that they require lengthy disk checks after a system crash.
许多比较老的文件系统缺少日志，这常常意味着在系统崩溃之后需要长时间的磁盘检查。
In crash recovery, transactions that are not committed will be rolled back while committed data will be flushed to disk.
在应急恢复中，把提交的数据刷新到磁盘时，将回滚没有提交的事务。
The state of the data on a disk may not be useable because when the snapshot was taken the data on the disk was considered to be crash consistent.
磁盘上数据的状态可能不可用，因为捕获快照时，磁盘上的数据被视为处于崩溃一致状态。
In other words, the data on a disk that is restored to a snapshot looks like the data on a disk after an operating system crash.
也就是说，恢复到快照的磁盘上的数据与操作系统崩溃前磁盘上的数据接近。
The softmax parameter is set to a lower number, so that the log control file is written to disk more often, and thus after a crash recovery the database may need less time to recover.
将softmax参数设置为较低的数字，以便更频繁地将日志控制文件写入磁盘，因而在崩溃恢复之后，数据库的恢复时间更少。
So, in the case of a crash, they would only have to reformat the disk and reinstall all programs.
因此，在崩溃之后，他们就可以将磁盘重新格式化，然后重装所有的程序。
A head crash in a fixed hard disk generally destroys the data, whereas the failure of a tape drive or optical disk drive often leaves the data cartridge unharmed.
对于固定的硬盘，磁头撞击通常会破坏数据，然而磁带或光盘驱动器的错误通常对数据盘碟是无害的。
A log structured file system writes all modifications to disk sequentially in a log like structure, thereby speeding up both file writing and crash recovery.
把对文件的修改汇成日志条目顺序地写入磁盘，既加速了写文件的速度，又加速了崩溃恢复的速度。
A simulated low-speed crash between comparably sized planetoids yields a Pluto and a Charon, plus an icy debris disk that could coalesce into a Nix and a Hydra.
两颗相似大小的行星在模拟低速碰撞中产生了冥王星和卡戎，还有可以形成尼克斯和许德拉的并碎屑。
A head crash is a disaster for a hard disk. It means that some or all of the data on the disk is destroyed.
磁头划伤对于硬盘来讲是灾难，它意味着磁盘上的数据部分或全部丢失。
We mentioned the alarming consequences that can happen if a hard disk suffers a head crash. You will lose some or all of your data or programs.
我们曾提到如果硬盘遭遇磁头划伤就会产生令人担忧的结果，你将会丢失部分或全部的程序或数据。
A head crash happens when the surface of the read-write head or particles on its surface contact the magnetic disk surface.
当读写头的表面或表面上的微粒与磁盘表面接触时会发生磁头划伤。
More faint still, the disk of the Milky Way Galaxy becomes apparent as a dramatic diffuse band across the sky that seems to crash into the horizon far in the distance.
还有更昏暗的是，我们银河系的盘面看起来就像是天空中一个扩散的云带，撞向远方的地平线上。
More faint still, the disk of the Milky Way Galaxy becomes apparent as a dramatic diffuse band across the sky that seems to crash into the horizon far in the distance.
还有更昏暗的是，我们银河系的盘面看起来就像是天空中一个扩散的云带，撞向远方的地平线上。
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