摘要
可靠性是网络存储系统最重要的指标之一,冗余磁盘阵列(RAID)是网络存储系统的基础和关键部件,RAID一方面通过冗余数据或校验信息增强容错能力;另一方面通过硬件部件冗余来提高系统可靠性。重点研究提高RAID可靠性的关键技术。分析降低磁盘阵列可靠性的几种主要因素:系统故障、不可纠位错误和相关联的磁盘故障,研究相应的防御措施,对双重校验信息冗余技术、硬件部件冗余技术、快速故障盘重建等关键容错技术进行研究与探讨。
RAID is the basis and kernel of the Network Storage systemParitybased information redundancy and hardware component redundancy has been proposed for insuring RAID provide high data reliabilityThe paper explores the design of highly reliable redundant disk arraysIt is analyzed how system crash,uncorrectable bit errors and correlated disk failures can decrease the reliability of redundant disk arrays,and how to defense themThe failuretolerance technologies,such as two check codes redundancy,hardware component redundancy,and fast online disk failure recovery are explored in the paper.
出处
《计算机应用研究》
CSCD
北大核心
2003年第7期49-51,66,共4页
Application Research of Computers
