MAGNETIC DISK DEVICE

The embodiment provides a magnetic disk device that can improve reliability by safely performing retract control even if there are a plurality of actuators independently driven. According to one embodiment, the magnetic disk device includes a first control unit and a second control unit. The first control unit controls action of a first actuator with a first head which reads/writes data from/to afirst magnetic disk. The second control unit controls action of a second actuator with a second head which reads/writes data from/to a second magnetic disk. Under predetermined conditions, the first control unit retracts the first actuator at a first time, and the second controller retracts the second actuator at a second time which is shifted from the first time by a certain period of time. 实施方式提供磁盘装置，即使具有独立驱动的多个致动器，也能够通过安全地执行缩回控制来提高可靠性。实施方式的磁盘装置具备第1控制部和第2控制部。第1控制部对具有对第1磁盘进行读/写的第1头的第1致动器的动作进行控制。第2控制部对具有对第2磁盘进行读/写的第2头的第2致动器的动作进行控制。进而，在预定的条件下，所述第1控制部从第1时刻开始缩回所述第1致动器，所述第2控制部从第2时刻开始缩回所述第2致动器，所述第2时刻是从所述第1时刻错开了预定时间的时刻。