摘要： 给出了一种利用现有计算机和少量必要的硬件，以容错管理软件为主要手段实现的低成本双机容错系统，主要介绍了该机的容错设计、容错管理软件的实现以及关键技术等问题。

关键词: 容错, 双机系统, 检查点与卷回恢复

Abstract: This paper presents a fault tolerant dual-computer of low cost, which consists of off the-shelf computers and some necessaryhardware and achieves fault tolerance by sofware mainly. The design, the implementation and other key techniques of the comPuter aredescribed.

中图分类号: 

• TP302