Data backup, which as a data security policy, divides into local backup and remotebackup.
数据备份是一种数据安全策略，分为本地备份和远程备份两部分。
2
Aimed at the fact that the original data of the remotebackup system changes continuously, a data consistency checking method based on summation digest is proposed.
针对异地备份系统中数据持续变化的情况，设计并实现了一种基于累积摘要值的一致性检测方法。
3
More usefully, because rsync can synchronize to a remote system, you can use it to create an automatic and remotebackup without having to separately copy the files to the remote system.