Design Of Multinational Cloud Storage System Framework And Implementation Of System Prototype

Along with the fast development of social informationization's and the dramatic increase of information data,the cost of data storage and data management also increased.Obsolescence of storage devices,natural disasters and various factors led to accidents that important data of enterprise and individual loss occurred more frequently.At same time,with all kinds of moblie devices produced,the needs of accessing data coming from people,anytime and anywhere,are more and more intense.Facing these increasingly prominent problems,traditional modes to store data may not meet people's needs of storing data.As a result,cloud storage technology attracts more and more attention of enterprise and individual.Cloud storage is a new application pattern of cloud computing technology.It that is based on server cluster technology,distributed file system technology,grid technology which connects different storage devices to provide a data storing service.Compared with traditional storage solutions,it has serveral features,such as high expansibility,high cost performance,high access speed and no limit of location.But as a new technology,it is facing many critical challenges.How to improve the security of cloud storage and prevent data leak caused users loss?How to improve the reliability of cloud storage data,in order to complete restore files when accidents happen?How to reduce the occupation of huge amounts of data to the cloud storage space?All of these had become hot topics in the area of cloud storage research.This paper,based on insight and research on development of cloud storage technology,proposes a multinational cloud storage system solution,and does a thorough research on the key techniques.The main works and innovations in this paper as follows:(1)Proposing a multinational cloud storage system architecture design and provides a solution to the security of cloud storage data.It that has many characteristics,such as data deduplication,data encryption,decentralized storing data,and data redundant backup,which is an effective solution to solve security risks of existing cloud storage system.(2)Proposing a more flexible sharding strategy to data.Firstly,filtering files that will be sharded by size,and the tiny files will be compressed to be a big file.Secondly,according to file specific type,dividing files into fixed-size chunk file,dynamic-size chunk file,no need cut file and structural chunk file,four categories.In the end,files of different abstract types use different chunking algorithms to process data.(3)Implementing interactive engine of multinational cloud.It has some functions,such as data upload,data delete and data download,which can manage multiple cloud storage space effectively.(4)Based on zbackup,an open source deduplication software,and fuse,a user space file system framework,implemented a prototype of multinational cloud storage system.It has some basic functions,such as data deduplication,data encryption,data upload,data download and data restoration.Though a series of experiments based on the prototype show that the design of multinational cloud storage system is reasonable and effective.