| 摘要 |
PROBLEM TO BE SOLVED: To restrain increase in the number of target recovery points even if a generation speed of write-in data to a storage device temporarily exceeds the bandwidth of a communication line to a backup device.SOLUTION: A storage device comprises: a plurality of storage means; data holding means for temporarily holding write-in data to each of the storage means, information on write-in destinations of the write-in data, and information on write-in time of the write-in data until the write-in data is transmitted; and communication control means for collecting the oldest write-in time per the storage means, for allocating a transmission band to transmit the write-in data per the storage means on the basis of priority having positive correlation with time difference between the collected oldest write-in time and a prescribed reference time, and for transmitting the write-in data to an external backup device according to the transmission band.SELECTED DRAWING: Figure 1 |
