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.

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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.

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步骤4：对主服务器采取0级备份。

Step 4: Take a level 0 backup of the primary.

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步骤4：将HDR备份服务器注册到主服务器。

Step 4: Register the HDR secondary server with the primary.

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备份作业驻留在主服务器上。

The backup job resides on the primary server.

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备份作业驻留在主服务器上。

The backup job resides on the primary server.

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