Fujitsu Corporation

Mihoko Maeda

Atsuhiro Otaka

Hidetoshi Satou

Akiko Sakaguchi

A control device configured to backup data updated in response to update requests issued by a plurality of host devices, includes a memory; and a processor configured to: record, in the memory, a reception interval and a last reception time of the update requests for each host device, compare an elapsed time from the last reception time to a certain timing and the reception interval at the certain timing for each host device, and start the backup according to a comparison result for each host device.

Control device and computer readable recording medium storing control program

A control device includes a processor configured to copy a part of data stored in a first volume to a second volume, copy whole data stored in the first volume to a destination volume, and receive a request to read first data stored in the second volume. The processor is configured to read the first data from the second volume when the first data has been partially copied to the second volume. The processor is configured to read, when the first data has not been partially copied to the second volume, the first data from the first volume on basis of association information associating the first volume with the second volume. The processor is configured to identify, upon failing to read the first data from the first volume, the equivalent volume on basis of recovery information related to the destination volume as an equivalent volume of the first volume.

Control device and method for controlling storage devices

A control method executed by a first storage control apparatus comprises receiving, from the information processing apparatus, a request to change data stored in a storage unit provided in the first storage control apparatus so as to be synchronized to changed data, extracting 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 unit provided in the second storage control apparatus, creating time information that identifies a time of the day at which the request was received, and transmitting a change request, which includes the extracted address information and the created time information, from the first storage control apparatus 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.

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Kawasaki, Japan

Mihoko Maeda