Booting from SAN can also simplify data center administration, improve disaster tolerance, and reduce total cost of ownership (TCO) through diskless servers.
从SAN启动还可以简化数据中心的管理，提高灾难恢复能力，由于服务器没有磁盘，还降低了总拥有成本(TCO)。
Data disaster tolerance technology, which is usually used by disaster tolerance system, is presented in brief. Its construction solutions and performance evaluation are also given.
简要介绍了目前容灾系统常用的数据容灾技术——异地数据复制技术，及其实际应用中的建设方案和性能估算方式。
User Interface Subsystem, State Analyze Subsystem, Policy Manage Subsystem, Take-over and Concur Subsystem, Data Recovery Subsystem are composed the Disaster Tolerance system of XX project.
XX工程灾备系统由五部分组成：用户界面子系统、状态分析子系统、策略管理子系统、接管互助子系统、数据倒回子系统。
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