Abstract: A storage device including a copy processor that carries out a copying process of storing the copy of the data stored in the copy-source volume into the copy-destination volume; a copying manager that prepares copying related to the copying process and sets the copying process to a stand-by state; an activation manager that sets activation target data representing a target to be activated for the copying process in response to an activation instruction from a superior device; and a copy controller that cancels the stand-by state of the copying process, being set the activation target data for, and causes the copy processor to carry out the copying process. This configuration makes it possible to back up data of multiple copy sessions, ensuring integrity in timing of data to be backed up without lowering the capability of an I/O process.

Abstract: A storage device includes a source volume and a processor. The source volume includes a plurality of data blocks. The processor is configured to execute a full copy process of copying all data blocks of the source volume to form a full backup volume. The processor is configured to execute, at a generation change timing of changing from a current generation to a next generation, a difference copy process of copying a first data block that has been updated in the current generation into a corresponding region of the full backup volume. The processor is configured to execute a generation backup process of storing the first data block of a previous generation in a generation backup volume corresponding to the current generation.

Abstract: A storage system includes a first storage apparatus and a second storage apparatus including a second controller for sequentially transferring a copy of the part of the segments of data from a second buffer into a second storage device segment by segment in the same sequence as the second buffer have received a copy of the part of segments of data from a first buffer of the first storage apparatus. The second controller producing a backup copy in a backup data storage portion by copying a copy of one of the segments of the data stored in the second storage device that has been transferred from the second buffer into the second storage device while transferring a copy of the subsequent segment of the data next to said one of the segments of the data in the sequence from the second buffer to the second storage device.

Abstract: A storage device includes a source volume and a processor. The source volume includes a plurality of data blocks. The processor is configured to execute a full copy process of copying all data blocks of the source volume to form a full backup volume. The processor is configured to execute, at a generation change timing of changing from a current generation to a next generation, a difference copy process of copying a first data block that has been updated in the current generation into a corresponding region of the full backup volume. The processor is configured to execute a generation backup process of storing the first data block of a previous generation in a generation backup volume corresponding to the current generation.

Abstract: A storage device including a copy processor that carries out a copying process of storing the copy of the data stored in the copy-source volume into the copy-destination volume; a copying manager that prepares copying related to the copying process and sets the copying process to a stand-by state; an activation manager that sets activation target data representing a target to be activated for the copying process in response to an activation instruction from a superior device; and a copy controller that cancels the stand-by state of the copying process, being set the activation target data for, and causes the copy processor to carry out the copying process. This configuration makes it possible to back up data of multiple copy sessions, ensuring integrity in timing of data to be backed up without lowering the capability of an I/O process.

Abstract: A control device includes a receiver that receives an instruction to update first data stored in a first volume to second data, and a copy processor that starts copying the first data into a second volume in response to the reception of the update instruction by the receiver and limits the start of copying of the first data from the second volume into a third volume until data that is stored in the first volume is completely copied into the second volume.

Abstract: A storage apparatus includes a processor to control the apparatus according to a process including creating, in each of the management areas in response to the restore execution instruction from the host, update information that indicating whether the data in each of the management areas is updated from restore generation to be restored to the latest generation, on the basis of the backup information in each generation, extracting the data before update stored in the backup volume of the oldest generation as the data of the restore generation on the basis of the update information for the oldest generation in each of the management areas, and updating the current data stored in the same management areas as the management areas in which the data before update was stored, by the data before update extracted by the extracting process.

Abstract: A storage device includes first-storage-module having a storage region for storing data transmitted from a higher-order-device, a plurality of second-storage-module temporarily storing data, reception-processing-module receiving data transmitted from the higher-order-device, first-storage-processing-module storing data received from the higher-order-device in the first-storage-module and storing data received from the higher-order-device in the second-storage-module following the order of reception, data-group-output-module outputting a data group including data stored in each of second-storage-module, data-group-storage-region-securing-module detecting an abnormality in output processing by the data-group-output-module and securing a data-group-storage-region for storing the data group in the first-storage-module or third-storage-module, evacuation-processing-module reading out the data group from the second-storage-module and evacuating to the data-group-storage-region depending on the usage state of the se

Abstract: A storage system includes a first storage apparatus and a second storage apparatus including a second controller for sequentially transferring a copy of the part of the segments of data from a second buffer into a second storage device segment by segment in the same sequence as the second buffer have received a copy of the part of segments of data from a first buffer of the first storage apparatus. The second controller producing a backup copy in a backup data storage portion by copying a copy of one of the segments of the data stored in the second storage device that has been transferred from the second buffer into the second storage device while transferring a copy of the subsequent segment of the data next to said one of the segments of the data in the sequence from the second buffer to the second storage device.

Abstract: A storage apparatus includes a processor to control the apparatus according to a process including creating, in each of the management areas in response to the restore execution instruction from the host, update information that indicating whether the data in each of the management areas is updated from restore generation to be restored to the latest generation, on the basis of the backup information in each generation, extracting the data before update stored in the backup volume of the oldest generation as the data of the restore generation on the basis of the update information for the oldest generation in each of the management areas, and updating the current data stored in the same management areas as the management areas in which the data before update was stored, by the data before update extracted by the extracting process.