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:(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 disk 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 ) 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「System Fault Tolerance」の詳細全文を読む スポンサード リンク
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