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XIII Chapter 0110: Summary All Network OSs offer certain key features, including file and print services and directory services to one or more users. They may also offer user authentication and authorization, application server, web server or proxy server functionality (among other features). Four common Network OSs are Microsoft Windows NT (and Windows 2000), Novell Netware, Apple Mac OS and Linux. We reviewed some features and network administration details of these OSs. Since file service is such an important NOS capability, we also looked into several hardware features which improve reliability and ease of administration of this functionality, inside and outside the bounds of traditional file servers. These are RAID (Redundant Arrays of Inexpensive Disk), NAS (Network-attached storage, a file-server specific server appliance) and SAN (Storage Area Networks, the latest use of clustering technology).
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