STORAGE SYSTEM, STORAGE CONTROL DEVICE AND STORAGE CONTROL METHOD

PROBLEM TO BE SOLVED: To copy external ejection object data to a portable storage medium for external ejection in a short time.SOLUTION: A writing processing part 31 writes data stored in a storage device 10 among ejection object data in a recording medium M0 for ejection. A reading processing part 32 reads data which are not stored in the storage device 10 in the case of making a request for ejection among the ejection object data from a portable recording medium in a storage part 21, and stores the data in the storage device 10 as writing object data by the writing processing part 31. An ejection processing control part 33 controls the start timing of the writing processing by the writing processing part 31 on the basis of the amount of data D1 stored in the storage device 10 and the amount of residual data D2 to be read from the portable recording medium by the reading processing part 32 among the ejection object data.