云计算的桌面备份系统实现

Design the Desktop Backup System Based on Cloud Computing

基于云计算的广泛应用并结合多种备份策略,实现了应用于用户桌面数据备份的备份客户端。进行云备份的用户面临着云存储接口多样,目录和大文件无法备份等问题。以SNIA的云存储模型为基础对比分析多家云存储厂商接口,设计了一个云接口层,从而屏蔽了各云存储厂商接口间的差异。通过将文件系统的目录层次与云存储的数据模型进行映射,采用分层传输的方法实现了对目录的备份。同时利用并扩展了文件元数据信息实现了完全备份、增量备份、差异备份。并采用断点传输机制实现对了大文件备份。最后对备份客户端进行了性能测试,结果表明该技术有较好的传输性能。

Based on extensive use of cloud storage,combined with various backup strategies,achieve a backup client running on the user＇s desktop.The users who used cloud backup confront with the diverse cloud storage interface,directories and large files backup trouble.Based on the SNIA cloud storage model,compared with diverse interface from several cloud storage vendor,a cloud interface layer which shields the difference cloud storage interface is designed.Mapping the file system directory hierarchies and cloud storage data model,using hierarchical transmission implements directories backup.Though extending the file metadata information to achieve full backup,incremental backup,differential backup.Using breakpoint transmission to realize big files backup.Finally,the backup client performance test results show that the technology achieve a good performance.