Scale-out type storage system

A first node transmitting a non-extension read command which is a read command for reading out data without extending, and in which command a logical address is designated that corresponds to compressed data, to a first nonvolatile memory device. The first node transmits a transfer command to a second node via a network. The transfer command is for transferring between nodes the data to be transferred, the transferred object being the compressed data read out without extending by the first nonvolatile memory device in response to the non-extended read command. The second node transmits, in response to the transfer command, a write command for which the compressed data is the target to write to a second nonvolatile memory device.