高效数据快照方法设计

Design of High Availability Snapshot Solution

随着现代企业对计算机技术依赖的增强以及数据量的增大,传统的镜像备份技术消耗的时间越来越长,在备份时又需要停机,使得企业的计算机系统在备份时需要长时间处于停机状态。这显然不符合现代企业的要求。数据快照技术应运而生,解决了这一矛盾。数据快照技术使得备份时间接近于零,消除了计算机系统停机对企业的不利影响。探讨了快照的设计方案和各种功能的实现,以及利用快照备份对数据进行恢复的机能。

The modem corporations are more and more depend on computer technique and corporation computer data are excessive. In this condition the traditional backup technique will take too much time, and when backup is running the computer system must be shutdown. So , the computer system will be in a long time of shutdown when backup. It can meet the modem corporations＇ request. The snapshot technique can meet the request. It reduce the backup time being close to zero, and clear up the harm from the computer shutdown. This thesis discusses the design of Snapshot solution, the implementation of functions and data restore when data failure occurs .