Reliable Techniques Of Cloud Of Clouds Storage Gateway

With the increasingly popularization and rapid development of cloud computing,more and more enterprises put data in remote cloud storage.However,as the current cloud storage has the problem of confidentiality,availability and integrity,the company does not fully trustingly put the internal confidential critical data in the cloud storage.In order to improve the availability of cloud storage service,this paper puts forward the Cloud-of-Clouds storage gateway,based on erasure codes algorithm to improve the data redundancy.The data is divided,coded and recombined,to improve the data security and reliability.Cloud-of-Clouds gateway storage structure is introduced into this paper.Through the Cloud-of-Clouds storage gateway,data is put in the cloud storage platform safely and reliably.The gateway can fit the most popular cloud,such as baidu cloud,ali cloud,amazon S3,etc,to provide users with unlimited extension of security cloud storage environment,which has the very high practical value.The Cloud-of-Clouds storage gateway uses the cloud storage platform.Through the use of cloud platform,data is divided into some fragment,which is recombined when the data is downloaded.Finally we prove that the join of erasure codes algorithm has little effects on the time delay of the cloud storage gateway,which can improve the availability of data at the same time,and reduce the cost of storage.In the cloud storage gateway,in view of the user data sharing between multiple departments,according to the existing theory and research present situation,proposed based on multistage metadata server metadata sharing mechanism of consistency,make users with safe data sharing between departments;When the metadata server is modified,sharing its metadata other metadata server application update strategy can update metadata accordingly.At the same time,this paper puts forward in response to high multi-sectoral multi-user concurrent access of coping strategies,based on the metadata server cluster is thread pool and high concurrency strategies.Against malicious access,this paper presents a malicious access detection strategy based on the data flow and detect malicious access,try to avoid the occurrence of malicious access.As well as in the case of malicious access the inevitable happens,the data and metadata to perform the corresponding recovery strategy,to ensure the safety of system.Finally,this paper designed and implemented the cloud storage gateway based on cloud platforms,the implementation of the interface call data fragmentation,while at the same time in the download data to shard to restructure.Rectifying delete code algorithm has been proved by the experiment of the join of little effects on the time delay of the cloud storage gateway,can improve the availability of data at the same time,and reduce the cost of storage.