Solution:
NAS: (Network Attached Storage) Network storage is based on standard network protocols for data transfer and can provide file sharing and data backup for computers with different operating systems such as Windows / Linux / Mac OS in a network.
1.Use areas such as following:
①Storage and sharing of multimedia files (video, audio, pictures)
②Support for 24-hour uninterrupted BT, FTP, HTTP, eMule and NZB downloads
③Backup and restore for Apple computers (using TimeMachine)
④HTTP/FTP service for personal websites
2.Composition: NAS devices are mainly composed of two aspects: hardware devices and operating system software.
Among the hardware storage media are generally: disk arrays, CD/DVD drives, tape drives or removable storage media, etc.
Software used are: operating systems (such as linux, UNIX, Windows) and related system software (such as the program in the FLASH chip), etc.
3. Network storage structures are broadly divided into three types:
① Direct Attached Storage (DAS: Direct Attached Storage): This is a storage device that is directly connected to the host system, such as used as internal hardware for server computers.
② Network Attached Storage (NAS): NAS is a mechanism for storing data using special devices connected directly to the network media. As these devices are assigned IP addresses, they can be accessed by clients through a server that acts as a data gateway.
SAN (Storage Area Network): A SAN is a network of storage devices connected to each other and to a server or a group of servers.