A system includes a read/write module and a caching module. The read/write module is configured to access a first portion of a recording surface of a rotating storage device. Data is stored on the first portion of the recording surface of the rotating storage device at a first density. The caching module is configured to cache data on a second portion of the recording surface of the rotating storage device at a second density. The second portion of the recording surface of the rotating storage device is separate from the first portion of the recording surface of the rotating storage device. The second density is less than the first density.

A method for adjusting a voltage of a supercapacitor is disclosed, the method, which is used to retard aging of the supercapacitor and extend a service life of the supercapacitor, includes: acquiring information that carries a system service volume; configuring a size of an available capacity value of the Cache according to the information; and adjusting a working voltage of the supercapacitor according to the configured size of the available capacity value of the Cache.

Systems and methods are disclosed for an actuator device or actuator control device to implement a low power savings mode. For example, a device can comprise an actuator arm including a first actuator and a second actuator, the second actuator configured to refine a movement of the actuator arm to a more precise position than use of merely the first actuator. A device can also comprise a control system configured to determine when the device is in an idle state and, when the device is in the idle state, disable the second actuator and perform a positional seek operation with the second actuator disabled. Power savings can occur from disabling the second actuator, which may also include disabling associated circuitry, such that it does not consume power or consumes a nominal (e.g., negligible or insignificant) amount of power during the associated seek operation.

Systems and methods are disclosed for an actuator device or actuator control device to implement a low power savings mode. For example, a device can comprise an actuator arm including a first actuator and a second actuator, the second actuator configured to refine a movement of the actuator arm to a more precise position than use of merely the first actuator. A device can also comprise a control system configured to determine when the device is in an idle state and, when the device is in the idle state, disable the second actuator and perform a positional seek operation with the second actuator disabled. Power savings can occur from disabling the second actuator, which may also include disabling associated circuitry, such that it does not consume power or consumes a nominal (e.g., negligible or insignificant) amount of power during the associated seek operation.

Provided is a hard disk peak shift starting system, including: a power supply unit, a mainboard and a hard disk backplane. The power supply unit provides power to hard disks via a first power connector, a second power connector, E-Fuse chips and hard disk connectors. A Complex Programmable Logic Device (CPLD) unit sets a power-up starting sequence of the hard disks and a power-up starting time interval between the hard disks, and the CPLD unit is connected to a logical control end of each of the E-Fuse chips to control, based on the set power-up starting sequence and the set power-up starting time interval, on-off of a power supply end of each of the E-Fuse chips, to realize control of peak shift powering up and starting of the hard disks.

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.

A system includes a read/write module and a caching module. The read/write module is configured to access a first portion of a recording surface of a rotating storage device. Data is stored on the first portion of the recording surface of the rotating storage device at a first density. The caching module is configured to cache data on a second portion of the recording surface of the rotating storage device at a second density. The second portion of the recording surface of the rotating storage device is separate from the first portion of the recording surface of the rotating storage device. The second density is less than the first density.

Implementations disclosed herein provide for detecting an expected or unexpected power loss event on a storage device. Responsive to the detection of the power loss event, a plurality of potentially affected data blocks are identified and/or marked, such as by a processor, to indicate that data stored therein is potentially corrupted.

Provided is a hard disk peak shift starting system, including: a power supply unit, a mainboard and a hard disk backplane. The power supply unit provides power to hard disks via a first power connector, a second power connector, E-Fuse chips and hard disk connectors. A Complex Programmable Logic Device (CPLD) unit sets a power-up starting sequence of the hard disks and a power-up starting time interval between the hard disks, and the CPLD unit is connected to a logical control end of each of the E-Fuse chips to control, based on the set power-up starting sequence and the set power-up starting time interval, on-off of a power supply end of each of the E-Fuse chips, to realize control of peak shift powering up and starting of the hard disks.