摘要
备份两大主流技术:镜像技术和快照技术。镜像技术能够高速有效地访问数据,快照技术能够以较小容量迅速地存储数据。存储对象作为这两种技术的基础,对数据的完整性和高可用性起着至关重要的作用。针对单盘和磁盘组作为存储对象的不足,阐述了原子事务组作为存储对象的备份方案,较好地解决了在大型的业务系统中数据的一致性和完整性。
The main technologies about backup：split- mirror and Snapshot. Split- mirror can access data effective. Snapshot can store data with highspeed and take up the space is smaller than split- mirror. But the storage is conseuence. Finally, aim at solving the problem that the logic disk and disk group can not ensure the strong expansibility, good fault- tolerance ability, and high usability. With technologies presents in this paper, Atomic Transaction Group as a storage which can protected against not only soft-failure but also hard-failure efficiently is introduced.
出处
《航空计算技术》
2009年第5期72-75,共4页
Aeronautical Computing Technique
关键词
原子事务组
高可用性
快照
镜像
atomic transaction group（ATG）
highly usability
snapshot
split-mirror
