关键词: 存储网格, 域, 顽存性, 冗余, 复制, 分片冗余

Abstract: This paper presents a domain-based prototype for grid storage，giving a deep analysis on the domain division，metadata directory service and fault tolerant approach.Then it places emphasis on the highly survivable redundancy schemes in data storage，and a hybrid redundancy scheme of replication and erasure coding is proposed.Experimental results show that the hybrid scheme is the optimization design of the replication scheme and the erasure coding scheme.Although the hybrid scheme requires more storage space，it enhances the availability of the whole storage data as well as optimizes the reliability of the erasure coding scheme with low redundancy factor.

Key words: storage grid, domain, survivability, redundancy, replication, erasure coding