Method for data storage during abnormal power down of computer

A data storage and computer technology, which is applied in the computer field, can solve problems such as loss and data loss, and achieve the effects of reducing losses, improving reliability, and ensuring integrity

Inactive Publication Date: 2014-09-10
INSPUR BEIJING ELECTRONICS INFORMATION IND
View PDF4 Cites 43 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the system suddenly loses power when the computer is working normally, because the data in the Cache and DRAM are not sa

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for data storage during abnormal power down of computer
  • Method for data storage during abnormal power down of computer
  • Method for data storage during abnormal power down of computer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Examples:

[0026] Such as figure 1 As shown, this embodiment provides a data saving system when the computer is abnormally powered down, including: a power supply module PSU (Power Supply Unit), a sequential logic circuit (mainly composed of a motherboard CPLD (Complex Programmable Logic Device, Complex programmable logic devices), Intel’s chipset PCH (Platform Controller Hub), one or more CPUs, and mixed memory connected to the CPU, including:

[0027] The power module PSU has a power failure alarm function, that is, it can send an alarm signal to the CPLD before the power module is powered off, and the DC power supply can continue to provide a support time of more than 1ms;

[0028] The mainboard CPLD is used to immediately notify the PCH to perform the memory power-down data protection process after detecting the power-down alarm signal of the power module;

[0029] PCH is used to notify the CPU to execute the power-down protection process through the "synchronous bus" imme...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for data storage during abnormal power down of a computer. The method comprises the steps that a PSU gives out power down warning signals to a mainboard CPLD before the power down; the mainboard CPLD sends a request for triggering synchronization to a PCH; the PCH sends a synchronizing signal to all CPUs after receiving the request; each CPU writes data in a Cache into a DRAM after receiving the synchronizing signal, and then sends a write-in completing mark to a controller of a mixed cache after write-up operation; when the controller detects the write-in completing mark, all the data in the DRAM are transferred to an NVM, and a storage completing signal is sent to the PCH after data transfer is completed; the PCH writes in a marking state of abnormal power down shutdown in an internal memory. According to the method for the data storage during the abnormal power down of the computer, when the computer powers down suddenly, running data of the computer can be stored in the NVM, when a system is restarted, the data can be read from the NVM, and reproduction of an accident site can be achieved, and losses of a user are reduced.

Description

technical field [0001] The invention relates to the field of computers, in particular to a method for saving data when the computer is abnormally powered off. Background technique [0002] A general computer storage system is composed of memory and external memory. According to the speed of storage, it is the cache memory inside the CPU, the dynamic random access memory (Dynamic Random Access Memory, referred to as DRAM) memory and the solid state disk (Solid State Disk, referred to as SSD) Or mechanical hard disk external storage, in which Cache and DRAM are composed of volatile storage media, and its main feature is that data cannot be saved after power failure, while SSD or mechanical hard disk is composed of non-volatile storage media (Non-VolatileMemory, referred to as NVM). Data will not be lost after its power failure. When the computer is working, the CPU first obtains data from the Cache, and if there is no data in the Cache, then it will look for it from the DRAM,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F12/16G06F1/30
Inventor 贡维林楷智
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap