Patent ID: 7293194

Claim:
A data processing method in which a first site comprises a first database (DB) access part currently in use, a primary first storage device that is assigned to said first DB access part currently in use, and a secondary second storage device that forms a pair with a primary second storage device; a second site comprises a second DB access part currently in use, a first DB access part for standby that corresponds to said first DB access part currently in use, said primary second storage device that is assigned to said second DB access part currently in use, and a secondary first storage device that forms a pair with said primary first storage device, and that is assigned to said first DB access part for standby; and an inter-site monitoring server is provided which monitors a first object of monitoring that is at least one of said first DB access part currently in use, a first server comprising said first DB access part currently in use, and said first site, and a second object of monitoring that is at least one of said second DB access part in use, a second server comprising said second DB access part currently in use, and said second site; said data processing method comprising the steps of: said first DB access part in use writing data into said primary first storage device; copying the data that is written into said primary first storage device into said secondary first storage device; said second DB access part in use writing data into said primary second storage device; copying the data that is written into said primary second storage device into said secondary second storage device; said inter-site monitoring server detecting that said first DB access part currently in use has gone down; and said inter-site monitoring server switching said first DB access part for standby from for-standby to currently in use after detecting tat said first DB access part currently in use has gone down.