STORAGE DEVICE SYSTEM FOR PREPARING COPY OF DATA

摘要

PROBLEM TO BE SOLVED: To prepare the copies of data sets or files inside a storage device. SOLUTION: A controller 112 receives a volume (original volume) in which original data are stored, a volume (copy volume) for storing a copy and the start and end addresses of the area of the object data set or file from a host 100. On the basis of received information, the controller 112 reads data in the object area of the original volume from a storage device 113 and prepares a copy.