| 摘要 |
A storage system is comprised of a first processing unit (main CPU) comprising a first input/output control unit and a configuration management unit as execution targets, a second processing unit (sub CPU) comprising a second input/output control unit and a higher-priority control unit which has an execution priority higher than the second input/output control unit as execution targets, and a shared memory which is allocated with a configuration table storing configuration information. When receiving a configuration information change instruction, a configuration information change control unit changes the configuration information of the configuration table during the reference of the second input/output control unit to the configuration table is inhibited by forcing the second processing unit to execute processing of the higher-priority control unit and forces the second processing unit to terminate the processing of the higher-priority control unit with completion of the change of the configuration information. The higher-priority control unit is a system control unit, a command relay control unit (maintenance agent) or an exclusive dedicated task control unit.
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