The Design And Realization Of Storage Gateway System Based On Hybrid Cloud

In this age of big data,data increases rapidly.Many companies are faced with many challenges about data.Because traditional date is provided mainly by disk array and local storage services.They are very expensive and of high cost of maintenance.Cloud storage,as a new kind of network storage technology,uses an application to gather various kinds of storage devices,then provides data storage service.It has advantages of high cost performance,good extensity,good usage,good reliability and low cost.Although it has many advantages and promising future,it still has many shortcomings,like unity of interface,unable to achieve seamlessness,safety risk and high delay of accessing.To solve these problems,I come up with an idea of storage gateway and design a prototype system based on it.It can achieve the management of multi-cloud platform and a back up for disasters of cross-platform.It can increase access speed by choosing proper data structure,storage technology and deleting repeat algorithm.Storage gateway is composed of two modules,including management module and data module.Management module is located in cascading layer,which controls the management of hybrid cloud and changing of interface.Data module is located in another cascading layer which is achieved by disk volume filter driver.Its main jobs are intercepting the I/O information of virtue machine,dealing with its reading,writing and replaying process and managing storage metadata outside the distributed band.This storage gateway achieves the snapshot function of disk based on the copy-on-write technique.Because the snapshot growth achieves the disk back up function.And the copy-on-write function of I/O achieves the copying function of disk.It can make a disaster back up of disk by snapshot,back up and copying functions.I made a detailed test of the function and performance of storage gateway.The result shows that the storage gateway can achieve the uniformed management of multi-cloud platform,disaster back up of cross-cloud platform.It can ensure the uniformity of data,meanwhile,it increases the access speed.This test can prove that storage gateway system is a practical hybrid cloud solution.