Continuous data storage method

A data storage and continuous technology, the redundancy applied in the operation is used for data error detection, memory address/allocation/relocation, response error generation, etc., which can solve the problems of low efficiency, high cost, and inconvenient expansion. , to reduce costs, ensure security, and improve scalability

Active Publication Date: 2012-07-18
HUAZHONG UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0004] The present invention provides a data storage method for a continuous data protection system. By using the data storage method, problems such as low efficiency, high cost, and inconvenient expansion of the existing continuous data protection system are solved, thereby providing large-scale CDP services

Method used

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Embodiment Construction

[0027] Below at first the technical term in the present invention is explained and illustrated:

[0028] Group member information list: IP addresses and listening ports of all members of the user group, used for connections between group members;

[0029] Copy files: several complete copies of the user's block data files stored in the user group;

[0030] Copy factor: the number of copy files of the user;

[0031] Copy destination host: For the current user, it is the member host in the group that stores the copy of the current user data. After the disk of the current user host is damaged, block data can also be obtained from all replica destination hosts to complete recovery;

[0032] Copy owner: Just the opposite of the copy destination host, it is the owner of the data copy stored on the current user host. The current user cooperates with the replica synchronization, acquisition and deletion of the replica owner;

[0033] Other group members: group members who do not ha...

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Abstract

The invention discloses a continuous data storage method, which comprises the steps of connecting a user end with a continuous data protection server, adding a user group in the continuous data protection server, and obtaining a group member information list; monitoring a public interface of the user group to wait for connection of group members of the user group; establishing a copy monitoring thread; connecting the group members of the user group according to the group member information list, judging identification of the group members and adding the group members into a corresponding group member list; monitoring and obtaining the synchronous requests of the group members, and establishing a copy of the main thread for the group members. The continuous data storage method takes the advantages of single storage and a local area network to improve the efficiency of data access. The data is no longer stored in the server, and is stored on other member host machines of the user group in the form of a plurality of copies. The continuous data storage method not only avoids performance bottle neck of the server and reduces service cost, but also ensures safety of the data. Even if a hard disc of a local host machine is damaged, the data still can be recovered.

Description

technical field [0001] The invention belongs to computer data storage and backup methods, in particular to a data storage method of a continuous data protection system. Background technique [0002] The Continuous Data Protection (CDP) method, without affecting the operation of business data, can continuously capture or track any changes in the target data, and can be restored to any previous point in time. It can protect the data state of the volume or file at any time from a certain moment, that is, every change of data will be recorded without omission. Due to this characteristic, continuous data protection methods place higher demands on the performance and space of the storage system. Storage solutions for existing CDP systems: either save data to a dedicated repository, or rely on protected hosts to use remote storage space. In order to prevent the possible damage or loss of the main continuous data protection repository from affecting the recovery ability, some cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F12/06
Inventor 周可李春花王欣兴
Owner HUAZHONG UNIV OF SCI & TECH
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