| 摘要 |
In the present invention, memory resources are effectively utilized by virtualizing external memory resources as internal memory resources, and erroneous operations that destroy the cooperative relationship of these memory resource and the like are prevented in advance. An external storage 2 is connected to a main storage 1, and real volumes 2 A 1 and 2 A 2 are respectively mapped into virtual volumes 1 B 1 and 1 B 2 (S 1 ). The control server 3 respectively acquires construction information 1 D and 2 D for the respective storages 1 and 2, and stores and controls this construction information in a storage part 3 D (S 2 ). When the user inputs operation contents 4 A from a control terminal 4 (S 3 ), the control server 3 judges whether or not the operation contents 4 A have an effect on the cooperation between the storages 1 and 2 on the basis of the operation contents 4 A and the information in the storage part 3 D (S 4 ), and performs only operations that do not have an effect (S 5 ).
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