近几年,计算机和网络技术发展迅速,越来越多的传统应用被转移到计算机和网络上,给人们的工作和生活带来极大的便利,但病毒和黑客等技术的发展、硬件故障的出现、天灾人祸的发生,严重威胁着网络数据安全。因此,我们必须建立完善的数据保护系统,特别是网络存储系统,以保障网络数据安全性和高可用性。近来,高可用性渐为用户追求的热点,采用什么技术实现高可用性便成为用户普遍关注的话题。 In recent years, the rapid development of computer and network technology, more and more traditional applications have been transferred to the computer and the network, to bring great convenience to people’s work and life, but viruses and hackers and other technology development, hardware failure The emergence of natural disasters and man-made disasters, a serious threat to network data security. Therefore, we must establish a sound data protection system, especially the network storage system to ensure network data security and high availability. Recently, high availability has gradually become a hot spot pursued by users. As a result of what technologies are used to achieve high availability, it has become a topic of general concern to users.