Highly available computer system and method for the changeover from the working programs of a highly available computer system

摘要

The present invention relates to a highly available computer system (6) as well as a method for the changeover from the working programs of a highly available computer system (6). The computer system (6) consists of at least one first (7) and a second (9) computer. On the first computer (7), at least a first control program (8) is loaded, the for the acquisition, processing and / or output of process - (17, 40) and / or control data (19) from and / or to the automation system is provided. On the second computer (9) is at least one to the first control program (8) identical second control program (10) is loaded, the waiting station location at a predeterminable. Furthermore, on the first (7) and on the second (9) computer at least one data updating per gram (42) is loaded and is started, which the current data values of the first control program (8) of the first computer (7) at a predefinable station location is detected, to the second computer (9) and transmits to the appropriate locations in the program sequence and in the reserved memory areas of the second waiting control program (10) is stored, wherein the second computer (9) are not suitable for a for the machining of the first control program (8) parallel processing of the second control program (10) is provided.