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信息社会,伴随着信息成倍增长数据的重要性也日益明显。如何存储数据、保护数据,如何实现不同数据的集中管理,如何实现网络上的数据集中访问,使数据具有高可用性,同时降低数据存储成本,便成为亟待解决的问题。DAS(DirectAttached Storage 直接连接存储)显然已不能满足这些需求,而 NAS 和 SAN 的出现则使这些问题的解决成为可能。一、NAS(Network Attached Storage网络附加存储)即将存储设备通过标准的网络拓扑结构连接到一群计算机上,利用 NFS(Network File System 网络文件系统)或者 CIFS(公用 Internet 文件系统)等标准的协议提供文件级的数据访问。
The importance of data in the information society, along with doubled information growth, is also becoming increasingly evident. How to store data, protect data, how to realize centralized management of different data, how to realize data centralized access on a network, make data have high availability and reduce data storage cost have become problems to be solved urgently. DAS (DirectAttached Storage direct attached storage) clearly can not meet these needs, and the advent of NAS and SAN so that these problems can be resolved. First, NAS (Network Attached Storage) is about to connect storage devices to a group of computers using standard network topologies and provide files using standard protocols such as NFS (Network File System) or CIFS (Common Internet File System) Level data access.