FAULT-TOLERANT APPARATUS FOR COMPUTER SYSTEM AND METHOD THEREOF

摘要

PURPOSE: A failure prevention device of a computer system is provided to recover failure of a computer system in real time with low cost without additional hardware cost by configuring central processing unit boards into a plurality of pairs and diagnosing and recovering failure of central processing unit boards in real time. CONSTITUTION: A first central processing unit board (10) includes a first main software program and a first failure recovery software program. A second central processing unit board (11) includes the first main software program and the first failure recovery software program. The first and the second central processing unit boards inspect failure of each other through the first failure recovery software program, process information received through a communication network using the first main software program and selectively output the processed information through the communication network to an external device. [Reference numerals] (10) First central processing unit board; (11) Second central processing unit board; (20) Third central processing unit board; (21) Fourth central processing unit board; (30) Ethernet communication board; (40) Power supply board; (AA,BB) ASR pair; (CC) External device; (DD) Ethernet network