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Power-off protection method, system and device

A technology of power-down protection and backup power supply, applied in the field of communication, can solve the problems of ineffective protection of data or configuration register information, large power consumption, fast power consumption, etc., to protect data and configuration information, increase protection, and expand The effect of the range of protection

Active Publication Date: 2008-05-21
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For large-capacity memory, because it has a self-refresh mode, it consumes a lot of power, which leads to the rapid consumption of power stored in the BBU. In order to meet the 72-hour protection time, it is necessary to continuously expand the BBU capacity
In addition, this method can only protect the data in the memory, and cannot effectively protect the data in the cache in the memory controller or the information in the configuration register.

Method used

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  • Power-off protection method, system and device

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Embodiment Construction

[0047] The embodiments of the present invention will be further described below in conjunction with the drawings and examples.

[0048] The main idea of ​​the present invention is: when the system is powered off, the backup battery is used to supply power to the memory, the memory controller and the non-volatile storage medium, and at the same time, the memory data and the data to be protected in the memory controller are stored in a non-volatile In the permanent low-power storage medium, the memory data can be protected for a longer period of time without being limited by the capacity of the backup battery. The memory controller is an important part of the computer system that controls the memory and enables data exchange between the memory and the CPU, so the data therein also needs to be protected when the power is off. Specifically, the data in the memory controller includes: cache-related data and register data.

[0049] The present invention provides a power failure pro...

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Abstract

The invention discloses a power-fail protection method, which comprises the following steps: when abnormal power-fail is detected, a piece of standby power supply equipment supplies power to a memory, a memory controller and nonvolatile storage medium; the memory and the data of the memory controller are written into the nonvolatile storage medium. The invention also discloses a power-fail protection system and the device. The invention has the advantages of solving the limit of specification for stand-by battery time and protecting the memory data for longer time under the condition of not increasing capacity of the battery and expanding protection range simultaneously, increasing the protection of buffered data of the memory controller and the data of a register, having functions such as recording power-fail event log and encrypting and / or compressing when the data is stored and more effectively protecting data and configuring information.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method, device and device for power-off protection. Background technique [0002] Power-down protection is a technology widely used in high-reliability and high-availability systems. It protects the data in the memory for a certain period of time when the system is powered off due to abnormal power supply systems, thereby effectively improving system availability and avoiding Data loss due to power failure. [0003] The current implementation method is to let the memory enter the self-refresh mode when the system is powered off. The memory is powered by the battery in the self-refresh mode. Since the power consumption of the memory in the self-refresh mode is relatively small, the battery must be protected for 72 hours. The required electric energy is also small, and there is no need to use larger backup power sources such as UPS (Uninterruptible Power Supply, u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06G06F12/16G06F9/00
CPCY02B70/30Y04S20/20
Inventor 郑卫红
Owner NEW H3C TECH CO LTD
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