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System and method for recovery from disaster

A disaster recovery and system information technology, which is applied in the field of network security and data communication technology, can solve problems such as being stuck in an endless loop, paralysis or even collapse, loss, system paralysis, etc., and achieve the effect of improving self-healing ability and enhancing stability

Active Publication Date: 2010-04-28
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The software dog program can realize partial monitoring of the system, and can partially or even rarely repair some abnormal states of the system. Once the CPU of the system itself falls into an infinite loop, paralyzed or even crashes, the software dog The program cannot monitor the entire system. If there is no special person on duty at this time, if the power is manually turned off and then turned on again after the problem is found, the system will always be paralyzed and crashed, and cannot be automatically restored, which will inevitably cause serious losses.

Method used

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  • System and method for recovery from disaster
  • System and method for recovery from disaster
  • System and method for recovery from disaster

Examples

Experimental program
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Embodiment 1

[0033] The system structure of this embodiment is as figure 1 As shown, it mainly includes: a clock source 1 , a memory 2 , a main control unit 3 and a hardware watchdog counter 4 .

[0034] Wherein, the clock source 1 is used to provide the clock to the hardware watchdog counter 4, which can be a crystal or a crystal oscillator; the memory 2 is used to regularly save the important information of the main control unit 3, which can be a non-volatile random access memory (NVRAM) Or flash memory (FLASH); Main control unit 3 is used for sending clearing signal and control hardware watchdog on / off signal to hardware watchdog counter 4, can be the main control unit of CPU or network equipment or network system or theirs Combination, etc.; hardware watchdog counter 4, used to interact with main control unit 3, obtain clear signal and on / off signal from main control unit 3, and send system reset signal to main control unit 3, can use programmable gate Array FPGA or complex programmab...

Embodiment 2

[0045] Such as image 3 As shown, the system structure of this embodiment is that a sequential logic processing unit is added on the basis of Embodiment 1 to realize the monitoring of the main control unit at the level of 3 milliseconds. The system of this embodiment includes: a clock source 1, a memory 2 , a main control unit 3 , a hardware watchdog counter 4 and a sequential logic processing unit 5 .

[0046] Wherein, the clock source 1 is used to provide the clock to the hardware watchdog counter 4, which can be a crystal or a crystal oscillator; the memory 2 is used to regularly save the important information of the main control unit 3, which can be NVRAM or FLASH, etc.; the main control unit 3 It is used to send a clear signal to the hardware watchdog counter 4 and control the hardware watchdog on / off signal, which can be the main control unit of the CPU or network device or network system or a combination of the three; the hardware watchdog counter 4 , used to interact ...

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Abstract

The system for recovery from disaster includes at least clock source to provide the hardware watch dog with clock signal, memory for storing important information of the main control unit regularly, main control unit and hardware watch dog counter of FPGA or CPLD. The hardware watch dog counter executes the monitoring of the main control unit, and in case of failed main control unit, the hardwarewatch dog counter will overflow to trigger the reset signal of the main control unit so as to make the main control unit re-start, read maintained information from the memory and recover from disaster.The present invention also discloses the method of recovering from disaster based on the said method. The present invention can strength the stability, reliability and antijamming capability of thema in control unit obviously, and raise the self-healing capacity of the main control unit.

Description

technical field [0001] The invention relates to the technical field of data communication and network security, in particular to a disaster recovery system and method. Background technique [0002] With the rapid development of computer and network communication technology, the topological structure of modern network and the field application environment are becoming more and more complex. Correspondingly, people's requirements for system reliability are becoming more and more urgent. Especially when the current network communication adopts the billing mechanism by the second, once the system fails or even collapses, it will cause extremely serious economic losses. Therefore, in order to avoid system failure, it is necessary to ensure the stability of the network communication system and its equipment. , Reliability and anti-interference ability put forward higher requirements, and some industries or enterprises such as telecommunications, banking, securities, large enterpri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/16G06F11/07
Inventor 程勇窦忠辉王伟李秋江
Owner LENOVO (BEIJING) LTD