Control apparatus, storage apparatus and computer-readable recording medium having stored therein control program

A storage apparatus, comprising:

• a plurality of devices;
• and
• a plurality of control apparatus configured to control access from a host apparatus to the plurality of devices;
• a first control apparatus from among the plurality of control apparatus includes:
• a first information storage unit configured to store coupling information relating to a coupling relationship between the plurality of control apparatus and the plurality of devices;
• a second information storage unit configured to store data relating to a communication between the plurality of control apparatus;
• a third information storage unit configured to store data relating to a communication between the host apparatus and the first control apparatus;
• and
• a processor in the first control apparatus configured to:
• specify, upon receipt of a first access request to a first device from among the plurality of devices, a control apparatus responsible for an access to the first device based on the coupling information stored in the first information storage unit;
• when the control apparatus responsible for the access to the first device is the first control apparatus, access to the first device based on the first access request received by the first control apparatus;
• and
• when the control apparatus responsible for the access to the first device is a second control apparatus, forward an instruction to access to the first device based on the first access request received by the first control apparatus to the second control apparatus through a relay apparatus that relays information to be transferred between the plurality of control apparatus and control data forwarding relating to the access, between the third information storage unit and a second information storage unit provided in the second control apparatus.

A non-transitory computer-readable recording medium having stored therein a control program for causing a first computer to execute a process comprising:

• controlling access from a host apparatus to a plurality of devices;
• specifying, upon receipt of a first access request to a first device from among the plurality of devices, a computer responsible for an access to the first device based on the coupling information stored in a first information storage unit, the first information storage unit being configured to store coupling information relating to a coupling relationship between a plurality of computers and the plurality of devices, the plurality of computers including the first computer;
• utilizing a second information storage unit to store data relating to a communication between the plurality of computers;
• utilizing a third information storage unit to store data relating to a communication between the host apparatus and the first computer;
• and
• when the computer responsible for the access to the first device is the first computer, accessing to the first device based on the first access request received by the first computer;
• and
• when the computer responsible for the access to the first device is a second computer, forwarding an instruction to access to the first device based on the first access request received by the first computer to the second computer through a relay apparatus that relays information to be transferred between the plurality of computers and controlling data forwarding relating to the access, between the third information storage unit and a second information storage unit provided in the second computer.