Design And Research Of RAID Based On Erasure Code

With the continuous breakthrough of the information technology and the rapid development of modern society,all kinds of information and data are generated by the exponential growth.With the big data era approaching,people demand for storage system is also more and more high,They hope the system can provide high performance,low power consumption,high reliability and high space utilization rate of storage support.In recent years,erasure codes is used to improve the performance,the storage efficiency and reliability of the storage system,reduce energy consumption,data transmission and maintenance cost of key technologies,People pay more and more attention on academia and industry storage,which has become a hot research topic.This thesis studies the ways to improve system performance,reliability and reduce energy consumption,make full use of correct code to delete characters,in improving the performance of the storage system,which make a detailed study on the reliability of the system,propose targeted solutions.The design of high performance,low power consumption,high reliability of the architecture of HPRAID,using the new strategy to make the system to achieve the premise does not weaken the stability of the data,the purpose of saving storage space;In the reservoir area system into a part of space,establish the correct code to delete the cache area receiving a write request at the same time to ensure the reliability of the new writing data.The system has an additional backup disk,so the reliability of the whole system is a multi system backup and reliability.The design of a write operation to reduce frequent disk write cache algorithm,improve the writing performance of the system.The experimental data show that,HPRAID in improving the system performance and reduce energy consumption than the current solution.