企业关键数据丢失会中断企业正常商务运行,造成巨大经济损失。要保护数据,企业需要备份容灾系统的帮助。但是很多企业在搭建了备份系统之后就认为高枕无忧了,其实还需要搭建容灾系统。备份是基石数据备份,是指为防止系统出现操作失误或系统故障导致数据丢失,而将全系统或部分数据集合,从应用主机的硬盘或阵列复制到其它的存储介质的过程。传统备份主要是采用数据内置或外置的磁带机进行冷备份。备份是数据高可用的最后一道防线,其目的是为了系统数据崩溃时能够快速的恢复数据。那么就必须保证备份数据 The loss of key business data will interrupt the normal business operations, resulting in huge economic losses. To protect the data, enterprises need backup disaster recovery system. However, many enterprises think of peace of mind after setting up a backup system, and actually need to build a disaster recovery system. Backup is the cornerstone of data backup, refers to the system to prevent errors or system failure caused by data loss, and the whole system or part of the data collection from the application host hard disk or array copied to other storage media process. Traditional backup is mainly used for data backup or external tape drive cold backup. Backup is the last line of defense for high-availability data, with the goal of quickly recovering data when system data crashes. Then you must ensure that the backup data