A data storage device may have increased signal-to-noise ratio contact detection by employing a transducing head associated with a data storage medium each connected to a controller. The transducing head can have an alternating current heater excited to a first frequency for a first revolution of the data storage medium and to a different second frequency for a second revolution of the data storage medium. The second frequency may produce lateral transducing head motion as a result of physical contact of the transducing head with the data storage medium. The controller can issue a contact status in response to comparing a first plurality of position error signals logged during the first frequency to a second plurality of position error signals logged during the second frequency.

According to one embodiment, there is provided a disk device including a head, a disk, a first motor, and a first circuit. The disk has a recording surface. The first motor causes the head to seek along the recording surface. The first circuit can switch between a first state and a second state. The first state is a state where a current path of the first motor is electrically cut off from a first electricity storage unit. The second state is a state where the current path of the first motor is electrically connected to the first electricity storage unit.

According to one embodiment, there is provided a disk device including a head, a disk, a first motor, and a first circuit. The disk has a recording surface. The first motor causes the head to seek along the recording surface. The first circuit can switch between a first state and a second state. The first state is a state where a current path of the first motor is electrically cut off from a first electricity storage unit. The second state is a state where the current path of the first motor is electrically connected to the first electricity storage unit.

An apparatus according to one embodiment includes a controller configured to control writing operations to a magnetic recording tape. The apparatus further includes logic integrated with and/or executable by the controller for causing the controller to write user data to the magnetic recording tape in a user data area of the magnetic recording tape. Furthermore, the logic is integrated with and/or executable by the controller for causing the controller to create a housekeeping data set (HKDS) that includes location information for the user data written in the user data area, and write several copies of the HKDS in a non-user data area of the magnetic recording tape.

An electronic device includes a sensing unit, a first control unit, and a second control unit. The sensing unit detects a parameter of the electronic device when the electronic device is tilted and sends a detection signal if the detected parameter exceeds the critical parameter. The first control unit and the second control unit receive the detection signal from the sensing unit. If the first control unit receives the detection signal before the second control unit, the first control unit controls the mechanical hard disk to power off and controls a magnetic head on the mechanical hard disk to reset from a working position to an original position. If the second control unit receives the detection signal before the first control unit, the second control unit controls the magnetic head on the mechanical hard disk to reset from the working position to the original position.

An electronic device includes a sensing unit, a first control unit, and a second control unit. The sensing unit detects a parameter of the electronic device when the electronic device is tilted and sends a detection signal if the detected parameter exceeds the critical parameter. The first control unit and the second control unit receive the detection signal from the sensing unit. If the first control unit receives the detection signal before the second control unit, the first control unit controls the mechanical hard disk to power off and controls a magnetic head on the mechanical hard disk to reset from a working position to an original position. If the second control unit receives the detection signal before the first control unit, the second control unit controls the magnetic head on the mechanical hard disk to reset from the working position to the original position.

An apparatus according to one embodiment includes a controller configured to control writing operations to a magnetic recording tape. The apparatus further includes logic integrated with and/or executable by the controller for causing the controller to write user data to the magnetic recording tape in a user data area of the magnetic recording tape. Furthermore, the logic is integrated with and/or executable by the controller for causing the controller to create a housekeeping data set (HKDS) that includes location information for the user data written in the user data area, and write several copies of the HKDS in a non-user data area of the magnetic recording tape.

An information processing apparatus includes a hard disk drive including a disk configured to store data therein and a head configured to access the disk and a control unit. The control unit causes the head to be retracted to a home position after a predetermined time period, based on an operation mode, has passed after performing control to cause the head to access the disk.

According to one embodiment, there is provided a disk device including a head, a disk, a first motor, and a first circuit. The disk has a recording surface. The first motor causes the head to seek along the recording surface. The first circuit can switch between a first state and a second state. The first state is a state where a current path of the first motor is electrically cut off from a first electricity storage unit. The second state is a state where the current path of the first motor is electrically connected to the first electricity storage unit.

According to one embodiment, there is provided a disk device including a head, a disk, a first motor, and a first circuit. The disk has a recording surface. The first motor causes the head to seek along the recording surface. The first circuit can switch between a first state and a second state. The first state is a state where a current path of the first motor is electrically cut off from a first electricity storage unit. The second state is a state where the current path of the first motor is electrically connected to the first electricity storage unit.