自20世纪70年代以来,灾难备份在经济发达国家得到了充分的重视。美国、欧洲等西方国家的政府和行业主管部门就重要信息系统的灾难备份建设制定了严格的法规条例和建设指引。“9·11”恐怖事件,造成了重大的人员伤亡和财产损失,一批公司因为重要数据的毁灭而无法恢复营业。“9· Since the 1970s, disaster backup has gained sufficient attention in economically developed countries. The governments and industry authorities in the United States, Europe and other western countries have formulated strict rules and regulations and guidelines on disaster recovery for important information systems. The September 11 terrorist incident caused heavy casualties and property losses. A group of companies were unable to resume operations due to the destruction of important data. "9·