Patent ID: 8219768

Claim:
A replication system comprising: a copy source storage site having a copy source volume; a copy destination storage site having a copy destination volume; and a communication line configured to connect the copy source storage site and the copy destination storage site, wherein the copy source storage site includes: a first memory configured to record management information in the copy source volume; and a first controller configured to record the management information in the copy source volume, and to store data including the management information about the copy source volume in a portable storage medium, wherein the management information includes system information about the copy source storage site and identification information about the copy source volume, wherein the copy destination storage site includes: a second memory; and a second controller configured to read data of the copy source volume from the portable storage medium and storing it in the copy destination volume, and to read the management information from the data and storing it in the second memory, and wherein the second controller sends the management information stored in the second memory to the copy source storage site via the communication line, and wherein after collating the management information stored in the first memory with the management information sent from the second controller and receiving an affirmative judgment that the collated management information is authentic, the first controller sets a copy pair relationship to the copy source volume and the copy destination volume.