此方案充分发挥了硬件的性能，解决了计费系统的数据备份和容灾，投入运行后效果良好。
This scheme exert ability of hard ware, resolve the bottle-neck of data backup and disaster recovery. Now it runs well.
本文在研究和分析容灾技术、网络存储技术、备份技术、磁盘阵列技术的基础上，设计并实现了一种基于SAN的远程镜像系统。
Based on research and analysis of disaster recovery, network storages, backup and disk array technologies, this thesis designs and implements of a SAN-oriented remote mirroring system.
因此为企业信息系统建立完善的备份机制和高效可用的容灾中心是完全必要的。
Therefore, building of the perfect backup mechanism for the business enterprise information system and efficiently available disaster tolerance center is completely necessary.
当前一些大型网络数据库管理系统（DBMS）的安全性方法主要包括：身份认证、访问控制、审计跟踪和数据备份，但对一些更为敏感和重要的数据，还需要进行数据加密或者容灾系统的设计。
The major Security methods in DBMS are as follows: identification, visiting control, trace of audit and copy of database, but as to the sensitive and important database, it needs to be coded.
课题工作内容主要分为：外腔半导体激光器用恒流电路的设计与实现和基于网络的远程数据备份容灾方案两大部分。
My paper is including two parts: the design and implement of the external cavity laser diode (ECLD) current source and the research of network data disaster recovery system.
课题工作内容主要分为：外腔半导体激光器用恒流电路的设计与实现和基于网络的远程数据备份容灾方案两大部分。
My paper is including two parts: the design and implement of the external cavity laser diode (ECLD) current source and the research of network data disaster recovery system.
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