Published: 03 February 2023
两地三中心的灾难恢复方案在中国非常流行，但这项措施的成本和其他挑战使大多数企业望而却步。基础设施和运营（I&O）领导者在设计灾难恢复战略之前，应做好业务影响分析和业务需求分析。
中国企业往往要求实现应用零宕机，这可能导致I&O领导者过度设计数据中心的灾难恢复（DR）战略。
很少有企业机构能为确保零数据丢失而承担两地三中心高昂的构建和维护成本，I&O领导者也很难找到最佳的解决方式。
简单地从主站点复制所有技术能力可能并不适合每个应用，而且可能会产生不必要的支出。
寻求合理的数据中心灾难恢复战略的I&O领导者，应：
开展业务影响分析（BIA），根据企业机构的业务需求制定恢复时间目标（RTO）和恢复点目标（RPO）。
仅在具有充分业务合理性的情况下——例如存在监管要求或高风险时——选择两地三中心战略，并且根据BIA的结果决定是否建设第二个和第三个站点。
根据应用层级和架构可行性来调整数据中心规模，利用数据中心托管或托管私有云服务来建立第二个和/或第三个数据中心，从而优化成本。
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