Data disaster-tolerance system and method

Abstract

The system includes parts: production equipment; disaster tolerance equipment; data reproduction system; switching system. The data reproduction system includes units: data reproduction unit of database in use for reproducing data in database in production equipment to database in disaster tolerance equipment; data reproduction unit of non-database in use for reproducing data of non-database from the production equipment to disaster tolerance equipment. The invention also discloses relevant method: reproducing initial data from production equipment to tolerance equipment; reproducing dynamic changed data of database and non-database from production equipment to tolerance equipment; when production equipment is abnormal, switching in disaster tolerance is carried out; disaster tolerance equipment instead of production equipment provides service. Features are: accessible to disk of disaster tolerance equipment when data reproduction is carried on so as to raise switching speed.

Description

technical field [0001] The invention relates to a processing technology for telecommunication data disasters, in particular to a data disaster recovery system and a disaster recovery method thereof. Background technique [0002] Today, more than ever, telecommunications businesses rely on computer systems. While providing technical infrastructure for the rapidly developing telecommunication services, the computer system has also become the core of the telecommunication service support system. Since user information and business processing are highly concentrated in the computer system, there are many hidden dangers of data disaster in the computer system. [0003] Data disaster refers to a major disaster in which a computer system is interrupted on a large scale during data processing and cannot be recovered within a certain period of time. Typical examples are: natural causes such as fires, explosions, earthquakes, and floods, as well as disasters caused by unnatural caus...

AI Technical Summary

Problems solved by technology

However, because the disk system on the disaster recovery device is in a protected state when receiving replication (that is, when writing data), it cannot be accessed

Since the business data on the disaster recovery device cannot be accessed when the synchronization is not over, it is difficult to verify the validity of the data, resulting in data inconsistency, especially if the key data for starting the database is inconsistent, it will cause the disaster recovery device to exist after the failure occurs The risk of startup failure, the success rate of disaster recovery switching is not high

[0014] 3. Since VERITAS VxVM / VVR can only perform data replication based on the entire logical volume, the selectivity of data replication is poor, and the data relationship to be replicated cannot be flexibly customized. As a result, even if only part of the data needs to be copied, because these data and other data are located in the same Disk volume groups cause all data to be copied, so inefficiency and waste of bandwidth and resources

However, because different versions of the operating system have different management methods for disks, different operating systems need to develop different VERITAS VxVM / VVR disk management replication systems

In this way, if the operating systems of the production equipment and the disaster recovery equipment are different, data synchronization cannot be realized, let alone disaster recovery, so this solution limits the scope of application of the disaster recovery system

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