Techniques used by network operating systems to ensure the integrity of data on the network, including protecting data against surface defects developing on the disk and storing redundant copies of important system data, such as file indices and file allocation tables (FATs). Disk duplexing, disk mirroring, a well thought out backup scheme, and RAID techniques all provide different levels of data protection.
See also diskless workstation; disk striping; disk striping with parity; fault tolerance; Hot Fix; intruder; redundant array of inexpensive disks; virus.