Storage system and connection control device

A second connection control device, comprising:

• a switch configured to relay data transmitted between a first storage device and a first main control device via a second communication route;
• a communication interface configured to communicate with a first connection control device that is configured to relay data transmitted between the first storage device and the first main control device via a first communication route different from the second communication route;
• and
• a processor configured to:
• receive a reception notification via the communication interface, the reception notification notifying that the first connection control device has received a first connection request from the first main control device, the first connection request requesting to establish a first connection with the first storage device via the first communication route through the first connection control device;
• transmit a third connection request to the first storage device via the switch upon receiving the reception notification, the third connection request requesting to establish a third connection with the first storage device;
• transmit a success notification to the first main control device via the switch upon receiving a second connection request after the third connection is established, the success notification indicating that a second connection is established, the second connection request requesting to establish the second connection with the first storage device via the second communication route;
• and
• transfer an input/output request to the first storage device via the switch upon receiving the input/output request, the input/output request being transmitted from the first main control device in response to reception of the success notification and requesting input or output of data to the first storage device.

A non-transitory computer-readable recording medium having stored therein a program that causes a computer to execute a process, the process comprising:

• receiving a reception notification that notifies that a first connection control device has received a first connection request from a first main control device, the first connection request requesting to establish a first connection with a first storage device via a first communication route through the first connection control device;
• transmitting a third connection request to the first storage device upon receiving the reception notification, the third connection request requesting to establish a third connection with the first storage device;
• transmitting a success notification to the first main control device upon receiving a second connection request after the third connection is established, the success notification indicating that a second connection is established, the second connection request requesting to establish the second connection with the first storage device via a second communication route different from the first communication route;
• and
• transferring an input/output request to the first storage device upon receiving the input/output request, the input/output request being transmitted from the first main control device in response to reception of the success notification and requesting input or output of data to the first storage device.