Method, system and device for power fail safeguard of data

Abstract

The invention provides a method, a system and a device for power fail safeguard of data. The device comprises a detection unit, a management unit and a fan. The detection unit is used for sending abnormality signals to the management unit after abnormality of an external power source is detected in real time. The management unit is used for generating a target duty ratio carrying first fan control signal and sending the first fan control signal to the fan after the abnormality signals sent by the detection unit are received. The fan is used for adjusting a rotation speed according to the target duty ratio carrying first fan control signal. The method, the system and the device for power fail safeguard of data have the advantage that system power consumption can be quickly reduced after power failure.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a data power-down protection device, system and method. Background technique [0002] Power-down protection is a technology widely used in high-reliability and high-availability systems. When the system loses power due to abnormal external power supply, the system needs to maintain continuous power supply for a period of time to avoid data loss caused by power failure. [0003] For example, a system with high data reliability requirements uses UPS (Uninterruptable Power System, uninterruptible power supply): after the external power supply is powered off, the UPS continues to supply power to the system; another example, after the system is powered off, the backup battery equipment, such as BBU (Battery Backup Unit, backup power supply group) provides power for memory, memory controller and non-volatile memory. So as to avoid memory data loss. [0004] However, both UPS and BB...

AI Technical Summary

Problems solved by technology

[0004] However, both UPS and BBU belong to battery power supply, and battery power supply has limited power storage

After the system is powered off, the power consumption of the system will continue to be large during the power-off process. As for the system control signal, the fan control chip is notified to adjust the duty cycle of the fan control signal to achieve fan speed reduction. It is only triggered after the business stops, the driver is uninstalled, etc., which accelerates the loss of battery power, resulting in the complete consumption of battery power and the inability to achieve data integrity.

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