经我查证，灾备中心常见的英文表达有：

databackup center;

disaster recovery center；

disaster preparation center；

还有题干中提到的BRC（business recovery center）。

【双语例句】

亚洲备灾中心、亚洲减灾中心、太平洋岛屿电信协会、联合国人类住区规划署和国际减灾战略机构间秘书处的代表也作了发言。 

Representatives of the Asian Disaster Preparedness Center, the Asian Disaster Reduction Center, the Pacific Islands Telecommunications Association, the United Nations Human Settlements Programme and the Inter-Agency Secretariat of the International Strategy for Disaster Reduction also made statements. 

联信永益公司作为此项目的系统集成商，与IBM、EMC等国际知名厂商一起完成了包括新建新生产中心，将现有数据和应用系统从现中心迁移至新生产中心，重新改造现中心作为灾 难 备 份 中 心 ， 实施生 产 中心 与 灾 难 备 份 中 心 之 间的数据异地同步复制，实现生 产 中心 、 灾 难 备 份 中 心 、 远程备份中心三地分别的数据备份相关网络改造，制定灾难切换方案和开发灾难恢复预案等各项工作。 

As system integrator for this project, Surekam works together with IBM, EMC and other famous international manufacturers to complete the new production center and upgrade the existing data and application system to new production center with synchronized data duplication between production center and disaster recovery center, realizing separate data backup, disaster switch plan and disaster recovery plan among production centers, disaster recovery center and remote data backup center.