CLOUD STORAGE SERVICES

Cloud computing is a hot topic in recent research and applications. Because it is widely used in various fields. Up to now, Google, Microsoft, IBM, Amazon and other famous co partnership have proposed their cloud computing application. Look upon cloud computing as one of the most important strategy in the future. Cloud storage is the lower layer of cloud computing system which supports the service of the other layers above it. At the same time, it is an effective way to store and manage heavy data, so loud storage attract some researchers. Therefore, the research of cloud storage will not only follow trends, but also has a high application value. Cloud storage is a distributed file system with complicated architecture. Firstly, it is implemented on top of the cloud computing infrastructure which is based on cheap, virtualized and unreliable physical hardware, Secondly, it supports large server scale, and has efficient heavy data storage. For all of these challenge, the key technologies of the system architecture and modules design is Cloud storage. This article discusses the background of the development of cloud storage, gives the definition of cloud storage, describes the characteristics of cloud storage, and proposes the mode of cloud storage architecture. Exposing the key technology of cloud storage systematically and comparing functions of different storage software