STORAGE PART CONTROL DEVICE, STORAGE PART CONTROL SYSTEM, STORAGE PART CONTROL PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM HAVING RECORDED THAT PROGRAM

摘要

To constantly use the latest data to respond to a request of reading data (area) that is to be duplexed in a copy destination of duplexing, there are included a queuing part (26) and a processing order control part (27). The queuing part (26) holds a processing order for requests of writing and reading a plurality of storage parts (10-13) received from a data processing device (2). If the data processing device (2) issues a request of reading a target area of a different storage part (12) of a copy destination that is to be duplexed by a duplexing control part (25) and further if there exists, after the turn of the processing of the reading request in the queuing part (26), a request of writing a target area of a storage part (11) of a copy source to which the target area of the reading request corresponds, then the processing order control part (27) puts the turn of the processing of the reading request after that of the processing of the writing request in the queuing part (26).