Control method and storage controller apparatus

A first storage control apparatus that transmits data to a second storage control apparatus for data synchronization with the second storage control apparatus, the first storage control apparatus comprising:

• a storage that stores data to be synchronized;
• a receiver that receives, from an information processing apparatus, a request to change the data to be synchronized stored in the storage to changed data;
• one or more hardware processors configured to:
• extract address information, included in the request, that identifies an address at which data corresponding to the data to be synchronized has been stored in a storage provided in the second storage control apparatus;
• create time information that identifies a time of the day at which the request was received;
• and
• a transmitter configured to transmit a change request, which includes the extracted address information and the created time information, to the second storage control apparatus, the change request requesting the corresponding data stored in the second storage control apparatus to be changed to the changed data.

A second storage control apparatus, that receives data from a first storage control apparatus for data synchronization with the first storage control apparatus connected to an information processing apparatus so as to be mutually communicate, the second storage control apparatus comprising:

• a storage configured to store data corresponding to data stored in a storage in the first storage control apparatus so as to be synchronized;
• and
• a controller including a CPU and a memory and configured to:
• receive a change request, which includes time information and address information, from the first storage control apparatus, the time information identifying a time of the day at which the first storage control apparatus received a request to change data to be synchronized from the information processing apparatus, the address information identifying an address at which the corresponding data has been stored in the storage, the change request requesting the corresponding data to be changed to changed data;
• and
• suppress the corresponding data, which has been stored in the storage and is identified by the address information, from being changed to the changed data when processing on the corresponding data is being executed and a time of the day at which a request that requests the processing to be carried out is later than the time of the day identified by the time information.