Management manner of the redundant resource and uses that the distributed fault tolerant computer system

摘要

PURPOSE:To improve the processing performance of the redundant resource and improve the reliability by assigning the proper number of redundant resources according to a reliability level that each task needs to have. CONSTITUTION:This system consists of (m) computer modules 101-10m having the same function and plural computer modules are assigned to tasks 111-11n for high reliability to execute the tasks redundantly. Then if a fault occurs in an optional computer module, =1 of modules to which different tasks are previously are assigned are selected and made to execute the tasks that the computer modules which gets out of order are executing. Namely, if there is a dangerous task which decreases in reliability level owing to fault occurrence during operation, the computer modules which have margins of reliability and are executing other tasks execute the dangerous task.