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Method for protecting and restoring continuous data

A recovery method and data protection technology, which is applied in the direction of data error detection and response error generation, which can solve the problems of difficult determination of recovery time, etc.

Active Publication Date: 2010-06-16
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a continuous data protection and recovery method, which solves the problem that the existing continuous data protection and recovery method is not easy to determine the appropriate recovery time, allows the administrator to perform multiple efficient recovery, find a suitable recovery point, and even if the local hard disk damaged, data recovery can also be performed through the remote server

Method used

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  • Method for protecting and restoring continuous data
  • Method for protecting and restoring continuous data

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Embodiment Construction

[0067] The present invention will be further described below in conjunction with the accompanying drawings.

[0068] The present invention includes a host process and a server process, and the two processes are performed in parallel,

[0069] Such as figure 1 As shown, the host process includes: a connection step, a copy step, a host judgment command step, a write operation information recording step, a full recovery step and an incremental recovery step;

[0070] Such as figure 2 As shown, the server process includes: a connection step, a server storing copied data, a server judging command step, a server storing write operation information step, a restoring request judging step and a data restoring step.

[0071] In order to provide continuous data protection for the currently running host, the host should be connected to a server. When the continuous data protection system is put into use, data copying must first be performed between the host to be protected and the ser...

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Abstract

The invention relates to a method for protecting and restoring continuous data, belongs to the computer data storage and backup method and aims to solve the problem that appropriate restoring time is difficult to identify by the existing method for protecting and restoring continuous data. In the invention, a host computer process and a server process are provided, the two processes are carried out in parallel; the host computer process comprises the following steps: initiating connection, copying, host computer command judgment, recording write operation info, carrying out full restoration and incrementation storage; the server process comprises the following steps: accepting connection, storing copied data by the server, command judgment by the server, write operation info storage by the sever, restoring request judgment and restoring data. With the method of the invention adopted, user requests for storing data to any-point-in-time can be supported and write data needed for completing restoration can be minimized; in addition, restoration time can be more conveniently and more effectively adjusted to seek appropriate recovery points and data loss can be minimized. The host computer and the server are separated, so that when a local host computer hard disk is damaged, data restoration can still be carried out.

Description

technical field [0001] The invention belongs to computer data storage and backup methods, in particular to a recovery method for continuous data protection systems. Background technique [0002] With the increasing dependence of enterprises on data processing, the loss of a small amount of data will cause a large amount of economic losses. Traditional data backup and recovery has been implemented with periodic backups and snapshots. Traditional backup methods and snapshots can only complete data recovery up to a fixed point in time, and data updates between two backups cannot be protected. As the amount of data increases, the RPO (Recovery Point Objective) and RTO (RecoveryTime Objective) of traditional backup methods and snapshots are too long, which is highly dependent on data information system is unacceptable. Such systems usually require continuous operation 24 hours a day, and a short-term service interruption or a small amount of data loss may cause huge business l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
Inventor 李春花周可冯光曦黄平张一萍李巍王睿
Owner HUAZHONG UNIV OF SCI & TECH
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