US Patent 10424328 Reduced latency I/O in multi-actuator device

An exemplary data refresh method disclosed herein reading data into volatile memory from a first storage region using a read element controlled by a first actuator assembly and writing the data from the volatile memory to a second storage region using a write element controlled by a second actuator assembly, where the first actuator assembly and the second actuator assembly are configured to receive data from control circuitry via independent read/write communication channels.