A storage system which includes a first storage device, and a storage control device connected to a higher level device and the first storage device. The storage control device controls reading or writing of data from or to the higher level device to or from the storage control devices. The storage control device can be connected to another storage control device, and can acquire device information of the other storage control device.

 
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< Cache coherent protocol in which exclusive and modified data is transferred to requesting agent from snooping agent

< Dynamically setting the optimal base addresses of process components

> Dual controller system for dynamically allocating control of disk units

> Method for operating an integrated memory unit partitioned by an external control signal
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