Data disaster tolerance system suitable for WAN

Abstract

The invention discloses a data disaster tolerant system which is applicable to a wide area network, pertains to the technical filed of computer information storage and solves the problem that the current data disaster tolerant system does not take the effect of data transmission links and the need of lots of redundant data storage space in the wide area network into consideration. The system of the invention comprises M local storage clients connected to the wide area network and N storage servers in different geographical positions; every local storage client consists of a web manager, a snap module, a mapping file redundant array module, a compression module, a decompression module, an encryption module, a decryption module, a backup distribution module and a recovery and integration module; the storage server consists of a failure detection module, a distributed arbitration module, a recovery module, a distributed copy service module, a backup and recovery service module. The system of the invention combines disaster tolerant coding and copying, reduces the amount of redundant data and effectively utilizes storage space. Meanwhile, data to be transmitted is compressed and encrypted, thus improving the safety and reliability of data on network transmission, effectively utilizing network bandwidth and reaching excellent disaster tolerant effect.

Description

technical field [0001] The invention belongs to the technical field of computer information storage, and in particular relates to a data disaster recovery system suitable for a wide area network. Background technique [0002] The data storage system under the WAN must be able to tolerate various physical errors (hardware storage device failure, network device failure) and logical errors (user's wrong operation, various deliberate attacks). These errors make the storage system must support the function of disaster recovery. For customers with storage needs, the user's data can be stored in the storage server through software with snapshot, remote backup and recovery functions, which can provide high-reliability storage services without interrupting the user's business. Remote data backup and data archiving can ensure that all data written locally is also written to a different place. After a disaster occurs, the data is restored from the remote place to the local in real tim...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a data disaster recovery system suitable for wide area networks, which solves the problems that the existing data disaster recovery systems do not consider the influence of data transmission links in the wide area network environment and require a large amount of redundant data storage space; to ensure the safe transmission of data and storage, reduce data redundancy, and effectively reduce the impact of the WAN environment on data disaster recovery

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