| 摘要 |
<p>A fault tolerant data processing system includes first, second, and third systems constituting a triplex arrangement. The first and second systems include first and second data processing units for performing the same data processing, first and second storage units from/in which data is read/written in accordance with data processing, and first and second fault tolerant units each connected to the data processing unit and the storage unit and having an input/output interface function of exchanging data with a front-end apparatus and a fault tolerant function of separating a system in which an abnormality has occurred and switching to a normal system. The third system includes a third data processing unit for performing the same data processing as that in the first and second data processing units, a third storage unit from/in which data is read/written in accordance with data processing, and a third fault tolerant unit connected to the data processing unit and the storage unit and having a fault tolerant function. The first to third fault tolerant units are connected to each other to communicate data used for the fault tolerant functions. A fault tolerant data processing method is also disclosed. <IMAGE></p> |
