Patent ID: 7290103

Claim:
A control method in a system coupled to a host computer and a disk array system and having a virtualization system and a management device, said virtualization system having a virtual volume corresponding to a logical volume, said logical volume being related to a plurality of disk drives in said disk array system, said control method comprising: mapping a first information regarding said logical volume to a second information regarding said virtual volume, said first information including information of a first Logical Unit Number (LUN) regarding said logical volume, said second information including information of a second LUN regarding said virtual volume; receiving, by said virtualization system, a data input/output request, sent from said host computer, and targeted to said virtual volume; changing, by said virtualization system, a LUN, which is included in said data input/output request and corresponds to said second LUN, to said first LUN, which corresponds to said second LUN, based on said mapped first and second information; transferring, by said virtualization system, said changed data input/output request to said logical volume so that said disk array system performs inputting/outputting of data corresponding to said data input/output request to/from said disk drives corresponding to said logical volume, said control method including the steps of: displaying, by said management device, a first list including said virtual volume and/or another virtual volume so that a user is able to select a copy source volume forming a copy pair; setting a selected volume as said copy source volume after displaying said first list; displaying, by said management device, a second list including said virtual volume and/or another virtual volume so that a user is able to select a copy destination volume forming said copy pair; setting a selected volume as said copy destination volume after displaying said second list; and copying data between said copy source volume and said copy destination volume.