对于联机备份数据文件，这将导致生成大量的重做日志。
This will result in enormous redo logs to be generated for online backup data files.
使用rsync存储备份数据
在做任何事情之前备份数据。
使用tar存储备份数据。
dump命令也可以用于备份数据库表。
The.dump command can also be used to back up a database table.
现在，这个备份数据库就是所有测试的起点。
The backup is now the database to be used as the starting point for all the tests.
然后需要使用BACKUP命令备份数据库。
Next you need to back up the database using the BACKUP command.
备份数据会花一些时间，但是绝对值得。
这为恢复受损数据库提供4种类型的备份数据。
This gives you up to four kinds of backup data you can use to recover a damaged database.
文件与文件组备份——一次备份数据库的一部分。
File and file group backup — Backs up a portion of the database at a time.
同样，别以为备份文件系统就可以备份数据库。
And again, don't attempt to back up your filesystem with the hope to back up your databases as well.
先备份数据库，然后用新的名称和/或路径恢复。
The database is backed up and then restored with a new name and/or target path.
像前面解释的那样，使用backup命令备份数据库。
Backup the database using the backup command as explained previously.
Amazon的S3服务是一种非常适合备份数据的服务。
Amazon's S3 service is a great option for backing up your data.
当更新drupal核心软件时，需要特别注意备份数据。
When the Drupal core software is updated, you need to be particularly careful about backing up your data.
如果数据库处于循环日志记录模式，只允许脱机备份数据库。
If the database is in a circular logging mode, only offline backup of the database is allowed.
备份数据库。
为了执行这个备份过程，必须有到所备份数据库的一个连接。
A connection to the database being backed up is required to execute the backup procedure.
使用多种方法备份数据库，并仔细测试所有备份和恢复场景。
Use more than one method to back up your database, and test all backup and recovery scenarios carefully.
如果备份数据看起来有点麻烦，那就对了，因为它的确是那样。
If backing up your data sounds like a hassle, that's because it is.
与脱机备份不一样，联机备份只要求备份数据文件和控制文件。
Unlike offline backup, online backup only requires that data files and control files be backed up.
注意，可以备份整个数据库，也可以备份数据库中的某些表空间。
Note that you can either back up the entire database or some selected table spaces within this database.
首先要备份数据库，确保在发生错误时，可以恢复到前面的环境。
Start by backing up the database, just to make sure you can recover to your previous environment, in case anything goes wrong.
在数据库离线或在线的情况下，使用RMAN实用程序备份数据库。
Use the RMAN utility to back up the database while the database is offline or online.
计算机难免会出现故障，所以必须能够备份数据并在发生故障时恢复。
Machine failure has to be expected, so it's crucial that your data can be backed up and restored in case of failures.
使用另一台计算机进行存储则意味着备份数据基本上是联机的和可用的。
Using storage on another machine means that the backup data is basically online and available.
备份数据的主要原则就是所有你认为重要的数据都有两份以上的物理备份。
The primary principle of backing up your data is that any important data should exist in two or more physical locations at once.
现在，我们可以从主要计算机上备份数据库，并将其还原到备用计算机上。
Now, it is time to backup the database from your primary machine and restore it on the standby.
在开始迁移之前，应该停止DirectorServer并备份数据。
Before starting with the migration, the director server should be stopped and the data backed up.
当然，环境中整体备份数据量的降低量取决于DAOS存储库中的独特附件。
Of course the amount of reduction in the overall backup data volume in your environment depends on the number of unique attachments in the DAOS repository.
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