Storage system and method for transferring data thereof

A method for transferring data executed by a storage system in which the storage system includes a plurality of storage controllers, the storage controller including a processor, a memory, and a transfer device that processes control data for controlling an internal operation of the storage system, the control data being transmitted and received between the plurality of storage controllers, the method for transferring data comprising:

• a first step of causing the processor to accumulate the control data in the memory when a transfer request for the control data is generated;
• a second step of causing the processor to generate a write request for transmitting a plurality of the control data stored in the memory and transmit the write request to the other storage controller;
• and
• a third step of causing, upon receiving the write request, the transfer device to write a plurality of the control data included in the write request to the memory.