A memory system includes first and second non-volatile memories and a memory controller respectively connected to the first and second non-volatile memories via first and second channels. The memory controller executes a first read operation of reading first data from the first non-volatile memory and a second read operation of reading second data from the second non-volatile memory in parallel in response to a first read request received from the outside, and sets a first transfer rate of the first channel to be lower than a second transfer rate of the second channel when a first time at which the first read operation is scheduled to be completed is earlier than a second time at which the second read operation is scheduled to be completed.