摘要： 业务的全球化使得备份窗口逐渐缩短，如何快速有效地对数据进行统一备份成为数据保护领域亟待解决的关键问题之一。该文设计并实现了一个基于块级备份的分布式数据备份系统(蓝鲸备份系统)。该系统采取块级备份方式，对于不同的文件系统或数据库，都可以采取统一方式进行备份。同时，块级备份能提供更细粒度的备份，与文件级备份相比，在备份性能和空间利用率上都得到了很大提高。蓝鲸备份系统采取策略驱动的自动备份，实现了管理的自动化。

关键词: 块级备份, 版本整合, 恢复

Abstract: Globalization causes the backup window shrunk sharply. How to backup data efficiently and effectively is one of the most urgent questions today. To solve the above problem, Blue Whale Backup System(BWBS) is designed and implemented. BWBS may backup different file systems and databases by the block-level backup method. And, because the block-level backup may provide backup with less granularity, so with the comparison of the file-level backup, the block-level backup has better improvement at two aspects of backup performance and space use. BWBS uses the policy-driven method to backup automatically in order to implement management automatization.

Key words: block-level backup, version integration, recovery

中图分类号: 

• TP393