LHC实验产生的数据将分布到全世界，同时在CERN用磁带保有一份主备份。
Data from the LHC experiments is distributed around the globe, with a primary backup recorded on tape at CERN.
根据系统类型特点，确定了主备份方式为脱机备份，辅助备份力式为导出，实现了系统自动备份。
Basing on system logical design and physical, we ascertain that the main backup way is offline backup and assistant backup way is export and realize system automatic backup.
如果主应用服务器出现故障，故障将自动转移到备份服务器。
The application servers will automatically fail over to backup servers should the primary fail.
在灾难恢复场景中，RSS服务器在地理上可以远离主服务器，充当远程备份服务器。
RSS servers can be geographically distant from the primary server, serving as remote back-up servers in disaster-recovery scenarios.
本例描述了一个简单的ha集群，由三个节点构成：一个主节点，一个备份节点，以及一个管理节点。
This example presents a simple ha cluster that consists of three nodes: a master node, a backup node, and a management node.
管理节点安装主节点和备份节点，并根据需要进行软件更新。
The management node installs both the master and backup nodes and provides software updates as required.
当主传输失败时可以动态增加备份通道。
Backup channels are dynamically added when the primary transport fails.
主节点和备份节点连接到一台IBMDS4500存储服务器。
The master and the backup node is connected to an IBM DS4500 storage server.
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.
GPFS允许主节点和备份节点并发访问集群中的所有文件。
GPFS allows both the master and backup nodes to have concurrent access to all of the files in the cluster.
启动主节点上的heartbeat服务，然后在备份节点上执行以下命令。
Start the heartbeat service on the primary and then on the backup node.
使用下面的命令启动主节点上的heartbeat服务，然后启动备份节点上的服务。
Start the heartbeat service on the primary and then on the backup node using this command.
管理节点通过运行在eth1上的私有管理网络连接到主节点和备份节点，如图2 所示。
The management node is connected to the master and backup nodes on a private management network running on eth1, as shown in Figure 2.
在主系统上，用以下命令备份逻辑日志：ontape- a。
On the primary system, back-up logical logs with the following command: ontape -a.
存储服务器通过高速 myrinet或者光通道连接到主节点和备份节点，如图2 所示。
The storage server is connected to the master and backup nodes with a high speed myrinet or fibre-channel connection, as shown in Figure 2.
使用下面的命令先后在主节点和备份节点上启动heartbeat服务。
Start the heartbeat service on the primary and then on the backup node with this command.
步骤4：对主服务器采取0级备份。
Heartbeat的配置是当主节点偶然宕机时切换到备份节点。
Heartbeat is configured to switch over to the backup node if the master node happens to go down.
当你准备好去备份，打开USB设备，然后打开你的Windows的主硬盘，把文件拖放到备份用但媒介上就可以了。
When you're ready to back up, simply open your USB drive from the Places menu, then open your main Windows drive, and drag files to copy from your Windows system onto the backup medium.
要在主节点和备份节点上安装WebSphereApplicationServerND 5.1以及必需的补丁包。
To install WebSphere Application Server nd 5.1 with the necessary fix packs on both the primary and the backup node.
要在主节点和备份节点上安装WebSphereApplicationServer 5.1Base以及必需的补丁包
To install WebSphere Application Server 5.1 Base with the necessary fix packs on both the primary and the backup node
从服务器（例如希望提供NIS主服务器数据库备份的计算机）将从服务器复制已发布的数据库。
Slave servers (for example, those machines that want to provide a backup copy of NIS master databases) copy the published databases from the server.
在这个层次，运行第二个HDFS实例(使用单独的名字节点)，作为热备份——如果主HDFS宕机，系统将向备份的HDFS写入。
In this layer, they also run a second HDFS installation (with a separate name node), which acts as a hot standy - if the primary HDFS is down, the system writes to the backup HDFS.
复制碎片是主碎片中所有数据的备份副本，它们的主要目的是从主碎片失败中恢复，提供高可用性。
Replica shards are backup copies of all the data in the primary shard, and their main purpose is to recover from a primary shard failure to provide high availability.
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.
参见参考资料小节获得关于配置ldap主-备份拓扑结构的信息。
See the Resources section for information on configuring the LDAP Master-Replica topology.
LDAP被设计为允许设置主/备份配置。
LDAP was designed to allow for a master/replica configuration.
要让部署管理器位于备份系统(10.0.0.6)上，我们需要设置所谓的多主dns项。
To enable the deployment manager to be located on the backup system (10.0.0.6) we need to set up what's called a multi-home DNS entry.
FOC指定在主服务器出现故障时接管其角色的备份服务器。
An FOC specifies the secondary server that takes over the role of the primary server if the primary server fails.
FOC指定在主服务器出现故障时接管其角色的备份服务器。
An FOC specifies the secondary server that takes over the role of the primary server if the primary server fails.
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