Redundancy magnetic disk control server system

The invention provides a redundant disk control server system. Based on a traditional server application mode, a piece of HBA card is increased, namely, a server mainboard is plugged with two same HBA cards, each HBA card is considered as being relatively independent, and each HBA card can all be composed with all other components to form an integral system. Two HBA cards form two systems which are redundant to each other and are backupped to each other. Compared with the prior art, the system can be fit for the continuous development of the Internet technology and the constantly increased network band width very well, can reduce the failure probability of a server, and can realize the load balance of two disk controllers, so as to achieve the goal of improving data band width.