Nfs-based Cloud Storage Gateway

Network File System (NFS), it is a system that allows various operations on a remote file through the network, the most important function is able to share files and directories between heterogeneous machines. Users and programs can transparently access the files on the remote system as access local files. Cloud storage is a new storage model, it is not a traditional set of hardware storage devices (such as disk, CD-ROMs, etc.), but a service provided by specialized cloud storage services providers.When a user use this storage service, just need to pay some fees. Cloud storage is a system that makes a variety of storage devices work together through application software,to provide external data storage and business access functions, so customers use the cloud storage service that is an overall service not a separate storage device. With cloud storage service, users are no longer limited to buy their own disks, constructed the storage systems and managed complex storage devices, but only pay some fees to put data files into the cloud and use the cloud storage space and management service,more simple,efficient, safe and reliable.Firstly, it describes the NFS related knowledge, tells the NFS architecture and various components, remote procedure call(RPC), MOUNT process ,and the 22 processes of NFS protocol are the key description objects. In addition, also describes how to configure an NFS server. Then introduce the Amazon cloud storage services S3, describe the framework of S3 and analyze S3's API and the complete operation. When we have a deeper understanding of NFS and S3, describe the cloud storage gateway design, five major modules of cloud storage gateway, as well as the processes of MOUNT and NFS file operations of gateway. Finally build cloud storage gateway test platform, analyze the test results and pointe out the further research directions.The design of cloud storage gateway based on NFS,make full use of the NFS file sharing capability and the Simple Storage Service.Customer can easily read and write the file objects stored in the cloud (we use Amazon's S3 services in our research) through the gateway. Gateway as a bridge between NFS clients and S3 complete transparent transformation of the file read / write operation. It is Not only can take advantage of facilitate and low-cost cloud storage services, but also achieve better resource sharing and user management, each user in an enterprise as long as mounted the cloud storage gateway can achieve file-sharing.