基于X Code和RS Code的二维分布式存储系统

随着分布式存储技术的发展,网络数据存储的安全性问题成为计算机领域研究的热点.在分析了基于X Code和RS Code技术的分布式存储系统的基础上,为进一步增强数据系统容错能力提出了一种改进的二维分布式存储系统.该系统将数据服务器中的数据块组织成具有行列坐标的两维实体,在列上将RS Code和X Code两种编码方法综合运用产生校验信息,在行上实行基于异或运算的校验.实验表明经改进的系统较采用RS Code技术的系统减少了数据恢复时间,较采用X Code技术的系统增加了容错数量,从而在整体上提高了系统容错效率.

Distributed Two-dimensional Storage System Based on X Code and RS Code

With the development of the distributed storage technique, the security of the datas stored in the network becomes the hot issue of the research in the field of computer. Based on the analysis of the systems constructed by the X Code method and RS Code method, this paper puts forward an improved two-dimensional distributed system to strengthen the capacity of the fault-tolerance. This system organizes the data blocks in the different data servers to two-dimensional entities with row and column coordination. It applies X Code method and RS Code method synthetically in the column and uses exclusive or method in the row.The experiments manifest that it decreases data recovery time compared with the system based on the RS Code method and increases the quantity of fault-tolerance compared with the system based on the X Code method. So it improves the capacity of fault-tolerance on the whole.