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For enterprise-class storage products, network storage is becoming a major mode of information processing. Therefore, more and more users currently use network attached storage (NAS) or storage area network technology (SAN). But how should companies choose which one, which has been the focus of debate within the industry. In fact, NAS and SAN both technology is different, the user no matter whether SAN or NAS, is by its own conditions and needs of different decisions. Here we start by talking about NAS storage technologies. Many readers know, NAS is in English "NetworkAttachedStorage" stands for the Chinese meaning is "network attached storage." Literally, it simply is connected to the network, with data storage devices, also known as "network memory" or "network disk arrays." For enterprise-class storage products, network storage is becoming a major mode of information processing. Therefore, more and more users currently use network attached storage (NAS) or storage area network technology (SAN). However, enterprises should choose exactly which one, which has been the focus of debate within the industry. Fact, NAS, and SAN both technology is different, the user no matter whether SAN or NAS, is by its own conditions and needs of different decisions. Here we start by talking about NAS storage technologies. NAS that? Many readers know, NAS is in English "NetworkAttachedStorage" stands for the Chinese meaning is "network attached storage." Literal is simply to connect the network, with information storage device, and therefore called "network memory" or "network disk arrays." Terms of structure, NAS is a function of a single thin computer, so the less complex structure like a server, home appliances like in appearance, only the power supply and simple controls, just through a cable connected to the terminal client, you can complete the installation of control NAS. NAS is a professional network file storage and file backup device, which is based on the LAN (local area network), and in accordance with the TCP / IP protocol to communicate to the file I / O (Input / Output) mode for data transfer. In the LAN environment, NAS has been fully achieved level data between different platforms to share, such as NT, UNIX and other platforms to share. A NAS system, including processors, file management module and multiple hard drives (for data storage). NAS can be applied in any network environment, the primary server and the client can easily access the NAS, on any format, including the SMB format (WIndows) NFS format (UnIx, LInux) and CIFS (CommonInternetFIleSystem) format, etc. . Through any computer, using IE or Netscape browser on the NAS device can be intuitive and convenient management. NAS Technical Features: NAS is actually a server with a thin (ThinServer) of storage, its role is similar to a dedicated file server. This dedicated storage server different from the traditional general-purpose server, it removed the original general-purpose server that does not apply to most computing, but simply to provide file system functionality for storage services, greatly reducing storage costs. This is to facilitate the storage to the network between the most efficient way to send data, the system hardware and software specifically optimized architecture, multi-threaded, multi-tasking network operating system kernel is particularly suitable for handling from the network I / O requests, and the traditional compared to the storage server is not only fast response, and the data transfer rate is also higher. Dedicated storage devices With traditional server-centric storage systems, the data is no longer transmitted through the server memory (which will cause additional delay and blockage), directly between the client and storage device transfer (the so-called third-party transfer). In this way, the server only from the control and management role, which has a faster response speed and higher data bandwidth. In addition, to lower the server can greatly reduce server costs, thus facilitating high-performance storage system in the broader context of universal application. Protocol independent connection simple NAS has a good deal of independence, support for UNIX, Netware, Windowsnt, OS / 2 or IntranetWeb data access, the client does not need any special software, easy to install, even as other machines in the network drive, can easily use existing management tools to manage. Different from the traditional general-purpose servers, NAS dedicated server can not increase the complexity, management costs, reduce reliability, based on the network's storage capacity increase, with very good scalability. As the need for more server hardware and services to enable the server's reliability and I / O performance significantly improved, can make full use of available 10M/100Mb or 1000Mb network bandwidth, greater data throughput. Plug and Play NAS can be a hub or switch easy access to the user on the network, is a plug and play network device. Provides users with easy to install, easy to use and management, high reliability and scalability of a good network storage solution. NAS file access operation to be more efficient, and easy to document from infrastructure to increase storage capacity. Because NAS is concerned that the file service, rather than the actual file system implementation, so very easy to deploy NAS device. NAS device and the client for data transmission between the main. Traditional network architecture, LAN / WAN on the transmission of large amounts of data is divided into many small pieces of data. Transfer process requires so much processing to interrupt and re-access the data stream. If the data packet processing taking up too much processor resources, while at the same application running on the server will be affected. Software and hardware RAID Course, there are some simple, low-cost NAS systems built using a software RAID the way, the time when the system load heavy, NAS system processor performance bottlenecks will lead to decreased transmission rate, the choice of NAS system, this is the problem the user needs to be considered. Summary of what, NAS of six characteristics: 1) a low TCO (TotalCostofOwnership total cost of ownership) 2) scalability 3) cross-platform 4) High Availability 5) high-speed 6) easy to install, maintain, use NAS and SAN difference I am an expert from sf1pk.com, while we provides the quality product, such as China thin wall molds , bronze investment castings, lost wax casting,and more.
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