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.
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.
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