规模、特点不同的企业往往会有不同的备份需求，因此，相应的备份方案也大不相同。但是不论规模多小，企业的关键数据往往依赖于网络的良好运转，因此，对网络系统备份的需要与大型网络一样重要。在这种情况下，本文力求找出一种对网络系统合理实用的系统备份方案。 Different size and characteristics of enterprises often have different backup needs, so the corresponding backup program is also very different. However, regardless of the size of the enterprise, critical data often depends on the good functioning of the network, so the need for backup of networked systems is as important as large networks. Under such circumstances, this article seeks to find a reasonable and practical system backup solution to the network system.