Method for guaranteeing reliability of backup data and data backuping method

A data backup and reliability technology, which is applied to redundancy in computing for data error detection, electrical digital data processing, and response to error generation. , improve reliability, avoid the effect of complete operation

Inactive Publication Date: 2018-09-28
EISOO SOFTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is an error in the backup data, it will be unrecoverable, and the backup will lose its meaning
Although some vendors provide data integrity and recoverability verification functions, they all stay at relatively basic functions

Method used

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  • Method for guaranteeing reliability of backup data and data backuping method
  • Method for guaranteeing reliability of backup data and data backuping method
  • Method for guaranteeing reliability of backup data and data backuping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: Improving the reliability of VMware virtual machine backup data

[0047] VMware provides a VADP interface for disaster recovery vendors to develop and customize virtual machine backup and recovery functions. Due to the huge market share of the VMware virtualization platform, almost all backup vendors can support full backup and incremental backup of VMware virtual machines. VADP provides CBT (Changed Block Tracking) technology to facilitate disaster recovery vendors to obtain changed data blocks between two snapshots of virtual machines. Combined with this technology, the reliability of VMware virtual machine backup data can be further guaranteed.

[0048] When the backup proxy client backs up the VMware virtual machine, it regards a single disk of the virtual machine as a backup object in the above technical content. The complete virtual disk backup process is as follows:

[0049] 1. Read the effective data (or incremental data) of the disk through CBT...

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PUM

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Abstract

The invention relates to a method for guaranteeing the reliability of backup data and a data backuping method. The method for guaranteeing the reliability of the backup data comprises the steps of cutting data of a backup object into data blocks with MD5 (Message-Digest Algorithm5) check values; realizing real-time check and periodic check on the basis of the MD5 check values; and carrying out repair attempt on the backup data on the basis of check results, wherein the real-time check is to carry out MD5 check on the MD5 check value of each data block during each backup to judge whether the backup data is abnormal or not; the periodic check is to carry out MD5 check on all the data blocks at all time points of the backup object according to a set period to judge whether all the time pointsof the backup object are reliable or not; and the repair attempt is to rewrite the damaged data blocks in the backup data and repair the unreliable time points. Compared with the prior art, the method provided by the invention has the advantages of greatly increasing the availability and reliability of the backup data and the like.

Description

technical field [0001] The invention belongs to the field of data disaster recovery, and relates to a method for ensuring the reliability of disaster recovery data, in particular to a method for ensuring the reliability of backup data and a data backup method. Background technique [0002] With the development of IT technology, more and more user data is concentrated in IT facilities and products, and users' data protection requirements are becoming more and more intense. Therefore, many data protection vendors have been born, and they have launched their own data backup products, providing various and excellent functions, such as: data deduplication technology, incremental backup, differential backup, data synthesis, LAN-Free and so on. These features not only help users improve backup performance, but also shorten the data backup window. [0003] When various data backup vendors are doing a lot of exploration on improving performance and reducing the amount of backup data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F11/10
CPCG06F11/1004G06F11/1448
Inventor 钱红江
Owner EISOO SOFTWARE
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