1. A control apparatus of a storage unit, the control apparatus having a first communication port for conducting communication with a computer, a first processor that controls the first communication port, a first storage device that stores a first queue for storing a command for conducting the communication sent from the computer to the first communication port, a first memory that the first processor accesses, a second communication port for conducting communication with the computer, a second processor that controls the second communication port, and a second storage device that stores a second queue for storing a command for conducting communication sent from the computer to the second communication port, the first processor executing the command stored in the first queue to thereby control the communication with the computer, the second processor executing the command stored in the second queue to thereby control the communication with the computer, the control apparatus comprising: a unit causing the second processor to implement execution of the command stored in the first queue; and a unit changing data stored in the first memory while the second processor is being caused to implement execution of the command stored in the first queue.