关键词: 存储系统, 可靠性预测, 主动容错方式, 被动容错方式

Abstract: The reliability prediction for storage system, which is useful to assess trade-offs, compare schemes and estimate the effect of several parameters on storage system reliability, can help system designers and administrators to build storage systems with high reliability. So the research on reliability prediction is always one of the research    focuses in storage system. This paper makes careful introduction and analysis in the field of reliability prediction for storage system, respectively from two prediction objects—disk and storage system. Firstly, this paper carefully analyzes the current development status of storage system reliability prediction, from the perspectives of two objects—disk individual and disk family, two fault tolerant manners—proactive fault tolerant scheme and reactive fault tolerant scheme, and two redundant mechanisms—erasure code and replication. Then, this paper indicates the unresolved problems and the future trend in this field. From the analysis, this paper finds there are some weaknesses and drawbacks on the reliability prediction for replication storage and proactive fault tolerant systems, and they are the issues needing further study.

Key words: storage system, reliability prediction, proactive fault tolerant, reactive fault tolerant