| 摘要 |
A disk array device (10) having a dual controller (20, 30) for executing data input/output processing for disk drives (DRV0 ... DRV14) in response to a data input/output request from a host computer (70). Each controller constituting the dual controller has an FC controller (25, 35) which is interface-connected to the host computer (70) via one path of a front interface connection FC (41, 51) and to the disk drives via one path of a back interface connection FC (42, 52), and a PBC (27, 37) for switching the connection destination of the back interface connection FC between the two FC-ALs (61, 62, 63, 64) loop-connected to the disk drives. |
