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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| System Fault Tolerance | 1/1 | https://en.wikipedia.org/wiki/System_Fault_Tolerance | reference | science, encyclopedia | 2026-05-05T11:39:37.894392+00:00 | kb-cron |
(DELETE) This text describes "product name", is not an encyclopedic entry. In computing, System Fault Tolerance (SFT) is a fault tolerant system built into NetWare operating systems. Three levels of fault tolerance exist:
SFT I 'Hot Fix' maps out bad disk blocks on the file system level to help ensure data integrity (fault tolerance on the disk-block level) SFT II provides a disk mirroring or duplexing system based on RAID 1; mirroring refers to two disk drives holding the same data, duplexing uses two data channels/controllers to connect the disks (fault tolerance on the disk level and optionally on the data-channel level). SFT III is a server duplexing scheme where if a server fails, a constantly synchronized server seamlessly takes its place (fault tolerance on the system level).
== References == Novell NetWare 4.2 documentation