NAS is a kind of the network media directly with the special equipment to realize data storage mechanism. Because of these devices are assigned IP address, so the client through the act as data gateway servers can carry on the access, and even in some cases, do not need any Toshiba Portege M800-104 Cpu Fan medium client can also direct access to the equipment. This technology can meet those who wish to reduce the storage cost but cannot afford SAN expensive price of small and medium-sized enterprises demand, have very good price performance ratio.
NAS head is as NAS environment of backup and restore application core components. NAS head use support for multiple file sharing agreement special operating system and file system structure. The NAS environment, can through the different ways to implement backup: based on IBM: in 2013, the cloud storage to be born server backup, no server backup or the use of network data management protocol (NDMP) backup. Usually of the implementation of the backup is NDMP2 road backup and NDMP3 road backup.