Method of controlling hard disk and electronic device

An electronic device, comprising:

• a processor;
• and
• a memory that is coupled to the processor and stores instructions to be executed by the processor, the instructions, when executed by the processor, causing the device to perform acts including:
• determining a number of power cycles that have been completed by a hard disk at a time point within a predetermined period of time, a power cycle including a total duration when the hard disk is in a spin-on mode and an immediately neighboring spin-off mode;
• in response to the number of power cycles that have been completed being below an upper limit number for the power cycles of the hard disk in the predetermined period of time,
• determining remaining time of the predetermined period of time starting from the time point, and
• determining, based on the remaining time, the number of power cycles that have been completed, and the upper limit number, a threshold idle duration for controlling the hard disk to enter the spin-off mode, and
• in response to the determined threshold idle duration being below a preset threshold idle duration, using the preset threshold idle duration for controlling the hard disk to enter the spin-off mode;
• wherein the threshold idle duration is determined based on:
• I
• ⁡
• (
• t
• )
• =
• D
• -
• t
• λ
• ⁡
• (
• P
• -
• c
• ⁡
• (
• t
• )
• )
• ,
• wherein I(t) represents the threshold idle duration at the time point, D represents a total duration of the predetermined period of time, t represents a duration from a beginning of the predetermined period of time to the time point, λ represents a coefficient, P represents the upper limit number, and c(t) represents the number of power cycles that have been completed at the time point.

A computer program product for controlling a hard disk, the computer program product comprising:

• a non-transitory computer readable medium encoded with computer-executable program code for controlling the hard disk, the code configured to enable the execution of:
• determining a number of power cycles that have been completed by the hard disk at a time point within a predetermined period of time, a power cycle including a total duration when the hard disk is in a spin-on mode and an immediately neighboring spin-off mode;
• in response to the number of power cycles that have been completed being below an upper limit number for the power cycles of the hard disk in the predetermined period of time,
• determining remaining time of the predetermined period of time starting from the time point, and
• determining, based on the remaining time, the number of power cycles that have been completed, and the upper limit number, a threshold idle duration for controlling the hard disk to enter the spin-off mode;
• and
• in response to the determined threshold idle duration being below a preset threshold idle duration, using the preset threshold idle duration for controlling the hard disk to enter the spin-off mode;
• wherein the threshold idle duration is determined based on:
• I
• ⁡
• (
• t
• )
• =
• D
• -
• t
• λ
• ⁡
• (
• P
• -
• c
• ⁡
• (
• t
• )
• )
• ,
• wherein I(t) represents the threshold idle duration at the time point, D represents a total duration of the predetermined period of time, t represents a duration from a beginning of the predetermined period of time to the time point, λ represents a coefficient, P represents the upper limit number, and c(t) represents the number of power cycles that have been completed at the time point.