大多数情况下，数据库系统本身将提供一种或多种备份与恢复机制，作为产品的组成部分。
In most cases, the database system itself will provide one or more backup and restore mechanisms as part of the product.
因为这两种存储系统在性能方面具有不同的特性，可能对备份与恢复解决方案造成影响。
Since these two storage systems have different performance characteristics, there may be an impact on the backup and restore solution.
虽然理想情况下，所有构件都在生产环境之外被完全备份，但您在“编写系统”的灾难恢复中可能需要使用“向后发布”。
Although, ideally, all the artifacts are backed up sufficiently outside your production environment, you might need to back-publish for disaster recovery of the authoring system.
可以将从非自动存储数据库创建的备份镜像恢复到自动存储数据库系统，但是反之则不行。
You can restore a backup image taken from a non-automatic storage database into an automatic storage database system, but not the opposite.
在下面的例子中，我将演示如何使用JFS2快照来在升级过程中备份和恢复文件系统。
In the following examples, I demonstrate how I used JFS2 snapshots to backup and recover a file system during an upgrade activity.
如果系统或媒体发生失败，您可以使用事务日志和第三方备份实用工具恢复数据库。
Then if a system or media failure occurs, you can use the transaction log and a third-party backup utility to recover your database.
确保你可以有效地使用备份和恢复工具，和在RAID设备上部署系统的可靠性。
Make sure you can use your backup and rescue tools effectively and reliably on systems deployed on RAID devices.
例如，是否可以启动、停止、备份及在系统失败后恢复和进行维护？
For example, can it be started, stopped, backed up, and recovered after a system failure as well as maintained?
大多数备份与恢复软件需要运行操作系统才能使用，但是如果你不能进入系统呢？
Most backup and restore programs require your system to be up and running in order to restore. But what if you cannot boot into Windows?
包含恢复点的磁盘的快照应该同时备份到本地系统中的磁盘和位于一个不同的远程位置的另一个磁盘。
Snapshots of the disks containing resumption points should be backed up on both the disk in the local system and to another disk at a different, remote location.
这将确保文件系统的正确性和恢复数据库备份中任何新的配置更改。
This will ensure the file system is correct and any new configuration changes are reverted in the database backup.
通过为实例准备备份与恢复策略，可在遇到实例损坏问题时，不必进行整个操作系统恢复。
By putting together a backup and recovery strategy for an instance, you can potentially avoid having to do a complete operating system restore when faced with a compromised instance.
如果你是想有一个备份用来恢复，那么记住版本控制系统做这个更加在行。
If you mean it as a backup and an opportunity to return to the old state, remember that the version control system does that better.
不好的一面是如果此操作失败，我们将需要从一个mksysb备份恢复此系统。
The downside is that if this fails, we would need to restore the system from a mksysb backup.
如果由于某种原因原始的account _ policy . tdb文件受到损坏，例如在系统不正常关机期间，您可以从其备份恢复旧的文件。
If for some reason the original account_policy.tdb file were to become corrupted, such as during an unclean shutdown of the system, you can restore the old file from its backup.
它们通常提供了最基本的单用户环境，您可以使用这个环境进行磁盘检查(fsck)、系统安全漏洞检查，或者从备份恢复受损的文件。
These almost always provide a minimal single-user environment that you can use to run disk checks (FSCK), check for system compromises, or restore damaged files from backup.
本文还讨论如何使用' flash -copy'服务创建用于系统恢复的备份磁盘。
This article also documents the use of 'flash-copy' services to create a backup disk to be used for system recovery.
对于Windows系统映像，- rm - win -swap - hib选项非常有助于保存备份和恢复时间，它的做法是排除swap和hibernation文件。
For a Windows system image, the option -rm-win-swap-hib saves backup and restore time by excluding the swap and hibernation files.
要增加更多的副本以取得更大的可伸缩性，只需从一个副本恢复一个备份，并允许Gridscale将新的系统与其他副本同步。
Adding additional copies for greater scalability is as simple as restoring a backup from one of the copies and allowing the Gridscale to synchronize the new system with the other copies.
系统管理：数据管理、数据仓库安全性、系统和数据库的备份和恢复，等等。
System management: data management, data warehouse security, system and database backup and recovery, and so on.
在这种情况中，重定向操作通常就无用武之地了，因为我们通常都不能在一个操作系统上备份一个数据库，然后将其恢复到另外一个操作系统上。
In this case, a redirected restore operation won't do the trick, because you can't usually back up a database on one operating system, and restore it on another operating system.
由于这些原因，理解数据库管理系统中备份和恢复功能的工作原理，并实施经过精心规划的备份策略，就显得至关重要了。
For these reasons, it is critical that you understand how backup and recovery features function for your database management system, and that you have a well-planned backup strategy implemented.
初始化为镜像的分割镜像可以用作系统级备份，从而使管理员可以执行快速的文件系统级数据库恢复。
A split mirror initialized as mirror can be used as a system level backup, allowing the administrator to perform a quick file system level recovery of the database.
完成备份并启动系统之后，将映像目录从物理服务器传递到一个位置，这个位置将作为虚拟机的恢复源。
After it's done and the server boots up, transfer the image directory from the physical server to the place you will use as the restoration source for the virtual machine.
而可恢复性则是另一个十分有意义的设计原则，它不仅仅是指所做工作的备份，更是为孩子们提供了一种回落到已知系统状态的直观方式。
Recoverability is another interesting principle being explored. This encompasses not only backup of work, but also providing children with an intuitive way to fall back to a known system state.
可以根据数据库位置(本地文件系统或ldap目录)备份和恢复它。
It can be backed up and restored according to the database location (either the local file system or the LDAP directory).
可以将32位系统上创建的备份镜像恢复到64位系统，但是反之则不行。
You can restore a backup image taken on a 32 bit level system into a 64 bit level, but not the opposite.
系统配置支持故障转移和灾难恢复，而主系统和备份系统可以放置在距离很远的两个位置。
System configurations support failover and disaster recovery, as primary and backup systems may be separated by many miles.
当主系统上备份的逻辑日志可用时，可以将它们恢复到辅助系统上。
Logical logs backed up on the primary system can be restored on the secondary system as they become available.
而且，如果您的确需要进行紧急系统恢复，也不想将宝贵的时间都浪费在寻找系统恢复所需的足够磁盘空间以及再在mksysb备份中清理数据文件系统的过程。
And, if you do need to do an urgent system recovery, you don't want to lose precious time finding large enough disks to restore to and then have to untangle data file systems from your mksysb backup.
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