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云存储是云计算的演变形式,云存储与云计算既有联系又有区别.云存储是指借助网络(尤其是Inteet),运用应用软件,为用户提供数据存储及访问功能的一个软硬件结合的数据集合系统.云存储本身并不是一种服务,它是为了实现数据存储服务功能而提供的一个系统支撑.云服务器位置的不确定性导致云存储中数据位置多变.云存储中的数据安全及隐私安全问题给数据用户提出了严峻的挑战.云存储中数据安全主要是指数据的采集、存储、访问、处理及数据交易安全.云存储中的数据安全与网络安全息息相关,数据安全的法律保护亟需制定.","Cloud storage is the evolution of cloud computing,cloud storage and cloud computing both connections and differences.Cloud storage refers to the use of the network (especially Inteet),the use of application software,to provide users with data storage and access functions of a software and hardware combination of data collection system.Cloud storage itself is not a service,it is in order to achieve data storage services provided by a system support.Uncertainty about the location of the cloud servers has led to variable data locations in cloud storage.Data security and privacy security in cloud storage pose a serious challenge to data users.Data security in cloud storage mainly refers to the security of data collection,storage,access,processing and data transaction.Data security in cloud storage is closely related to network security,the legal protection of data security urgently needs to be developed.