Internal and exterior hard disks are commonly used to keep data in computers. The computer can exchange info on its attached hard disks with other networked devices if it is linked to a network. This makes it possible for numerous computers to exchange data, but it necessitates that each computer communicate its files separately. Therefore, if a computer is unplugged from the network or switched off, the other systems won't have access to its data.

Computers can view and keep data using NAS by using an unified storing spot. The shared data is kept on a single NAS system rather than on each device exchanging its individual files. This offers a faster and more dependable method of file exchange over a network. An NAS server can be set up to exchange data with numerous devices on the network once it is linked to a network (usually via Ethernet). It may enable access to all systems or may provide access to a restricted number of authorized devices.

NAS computers frequently have numerous hard drives, giving linked systems a lot of common storage capacity to store data. Although they are frequently used in business networks, residential networks are also using them more and more. Family members may find it easy to exchange and back up their data with NAS because it employs a single storing device.