Control device, storage apparatus and controlling method

A storage apparatus comprising:

• a plurality of storage devices for storing data;
• and
• a control device for controlling the operations of the plurality of storage devices, wherein
• the control device includes
• a memory for storing data with an error detection code by being supplied a power from a main power source or from a sub power source, the data being used for execution of processing;
• a judging section for judging whether an error in the data held in the memory by the power from the sub power source is detected using the error detection code after the power from the main power source to the memory has been resumed;
• and
• a processing control section for continuing execution of the processing using the data stored in the memory if it has been judged that no error in the data stored in the memory is detected by the judging section, and executing a recovery processing if it has been judged that an error in the data stored in the memory is detected.

A controlling method for controlling a control device operable under a power supplied from a main power source comprising:

• storing data with an error detection code into a memory by being supplied the power from the main power source or a power from a sub power source, the data being used for execution of the processing;
• judging whether an error in the data held in the memory by the power from the sub power source is detected after the power from the main power source has been resumed;
• and
• continuing execution of the processing by using the stored data if it has been judged that no error in the data stored in the memory is detected, and executing a recovery processing if it has been judged that an error in the data stored in the memory is detected.