NAS may refer to any of the following:
1. Short for network access server, NAS is a terminal server that connects to and communicates with another computer or service. For example, when you dial in to connect to the Internet, you're dialing into a NAS.
2. Short for network-attached storage, NAS is any storage device that is connected to a network and provides a network with additional storage. A NAS does not have any processing power on its own, meaning it cannot be used to execute or run network shared programs.
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