WO2013037314A1

WO2013037314A1 - System and method for use in data processing center disaster backup

Info

Publication number: WO2013037314A1
Application number: PCT/CN2012/081424
Authority: WO
Inventors: 鲁志军; 杨燕明; 华锦芝; 邱鹏
Original assignee: 中国银联股份有限公司
Priority date: 2011-09-16
Filing date: 2012-09-14
Publication date: 2013-03-21
Also published as: CN103001787B; CN103001787A

Abstract

Provided in the present invention are a system and method for use in data processing center disaster backup. The system for use in data processing center disaster backup comprises: a primary data processing center, at least one backup data processing center, and a communication access subsystem, where the communication access subsystem is for use in establishing a communication link between the primary data processing center, the at least one backup data processing center, and the at least one external user system, and in managing and implementing a switchover of the communication link. The disclosed system and method for use in data processing center disaster backup allow for significantly reduced switchover time and for reduced impact of the switchover process on the external user system.

Description

System and method for data processing center disaster tolerance ^ ^

The present invention relates to systems and methods for disaster tolerant backup, and more particularly to systems and methods for data processing center disaster tolerant backup. Background technique

At present, with the increasing use of electronic computer applications and network communication applications and the growing variety of services in different fields, systems and methods for disaster recovery of data processing centers have become more and more important.

As shown in FIG. 1 , in the existing system for data processing center disaster recovery backup, in an initial stage, an external user system (for example, a client system) only establishes a communication link with the primary data processing center, thereby performing data interaction. And processing, and when the data interaction and processing tasks need to be taken over by the alternate data processing center for some reason (eg, the primary data processing center fails), the client system must actively cooperate or passively respond, thereby actively Or passively disconnecting the communication link with the primary data processing center and establishing a communication link with the alternate data processing center.

However, the existing systems and methods for data processing center disaster recovery backup have the following problems: (1) The switching between the primary data processing center and the standby data processing center requires manual or semi-automatic triggering, so from the start of the handover to the completion of the handover. (including the cooperation or response of the external user system) takes a certain amount of time, so that the interaction and processing of data during this time period will be affected to some extent; (2) The switching of the external user system also takes a certain time, and when When the main data processing center is connected with more (for example, hundreds of thousands) external user systems, the cumulative effect brought by the switching of the external user system will be very significant, so the continuity and completeness of the data interaction and processing after the switching. Sex will be greatly challenged; (3) Due to the above two problems, from the perspective of the overall design of the system, it is necessary to avoid switching from the primary data processing center to the standby data processing center, thus requiring primary data processing. The high availability and ease of upgrade of the center, which significantly increases the cost of the overall system.

Therefore, in order to adapt to the growing and changing application types, there is a need to provide a system and method for data processing center disaster recovery backup that can achieve smooth switching. Summary of the invention

In order to solve the above drawbacks of the prior art solutions, the present invention proposes a system and method for data recovery center disaster recovery backup.

The object of the invention is achieved by the following technical solutions:

A system for disaster recovery backup of a data processing center, where the system for disaster recovery backup of a data processing center includes:

a primary data processing center for implementing data interaction with at least one external user system and processing data from the external user system through a communication access subsystem;

At least one alternate data processing center for enabling data interaction with the at least one external user system and processing from the external user system in an alternate manner by the communication access subsystem Data

a communication access subsystem, configured to establish a communication link between the primary data processing center and the at least one alternate data processing center and the at least one external user system, and manage and implement Switching of the communication link.

In the solution disclosed above, preferably, when the at least one external user system initiates a connection request to the communication access subsystem, the communication access subsystem responds to the connection request at the communication connection Establishing at least one first communication link between the ingress subsystem and the at least one external user system, and each of the communication access subsystem and the primary data processing center and the at least one alternate data processing center At least two second communication links are established between each.

In the solution disclosed above, preferably, the communication access subsystem determines and maintains an association relationship between the at least one first communication link and the at least two second communication links.

In the solution disclosed above, preferably, each of the at least two second communication links has a priority.

In the solution disclosed above, preferably, when the at least one external user system performs data interaction with one of the primary data processing center and the at least one standby data processing center, the communication access subsystem Data from the at least one external user system is forwarded based on the priority selection of one of the at least two second communication links.

In the solution disclosed above, preferably, when the primary data processing center is operating normally, the communication access subsystem selects to forward to the primary data processing center from the at least one external use User system data.

In the solution disclosed above, preferably, when the primary data processing center fails, the communication access subsystem selects to forward from the at least one external user to one of the at least one alternate data processing center The data of the system, thereby completing the switching of the communication link.

In the solution disclosed above, preferably, the primary data processing center has a higher priority than the at least one alternate data processing center.

In the solution disclosed above, preferably, the system for data processing center disaster recovery backup has at least two alternate data processing centers, the at least two alternate data processing centers having different priorities.

In the solution disclosed above, preferably, when the communication access subsystem performs the handover, the communication access subsystem does not need to re-establish a communication chain with one of the at least one standby data processing center. road.

In the solution disclosed above, preferably, the communication access subsystem is further capable of automatically identifying and maintaining a connection status of the at least one external user system, each of the at least one standby data processing center, and Maintain consistency of the communication link to the upper connection and the communication link to the lower connection.

In the solution disclosed above, preferably, the communication access subsystem further comprises: a data switching device, configured to pass data from the at least one external user system to the at least two Forwarding to one of the primary data processing center and the at least one alternate data processing center;

a management device, configured to generate a management instruction based on a command of an external management party, and transmit the management instruction to the data conversion device;

A profile management device for storing and managing a profile, wherein the profile is preset by the external manager according to requirements.

In the above disclosed solution, preferably, the data switching device further comprises: a main processing module, the main processing module configured to establish the at least two in response to a connection request from the at least one external user system And a second communication link, and implementing one of the at least one external user system and the primary data processing center and the at least one alternate data processing center by one of the at least two second communication links Data interaction between the two, and maintaining and managing the at least two second communication links based on the management instructions; a monitoring module, configured to monitor an operating state of other modules in the main processing module, and restarting the module in which an abnormality occurs when an abnormality occurs in any one of the other modules;

a management module for receiving and processing management instructions from the management device and transmitting the management instructions to the main processing module.

In the solution disclosed above, preferably, the management module is further configured to receive a management instruction processing result from the main processing module, and transmit the management instruction processing result back to the management device.

In the solution disclosed above, preferably, the management module is further configured to receive and process configuration data from the profile management device, and transmit the processed configuration data to the main processing module.

In the solution disclosed above, preferably, the monitoring module is further configured to create a submodule that monitors itself, and restarts the monitoring module when an abnormality occurs in the monitoring module.

In the solution disclosed above, preferably, the main processing module further includes: at least one listening unit, the at least one listening unit is configured to monitor the connection request initiated by the at least one external user system, and in response to The connection request establishes the at least two second communication links;

At least one data forwarding unit for processing data from the at least one external user system and transmitting the processed data through one of the at least two second communication links One of the primary data processing center and the at least one alternate data processing center;

a state maintenance unit, configured to periodically update working state data in the shared memory corresponding to each unit in the main processing module for use by the monitoring module;

a management instruction processing unit, configured to receive and execute a management instruction from the management module, and transmit the management instruction execution result back to the management module;

And a configuration data maintenance unit, configured to receive the configuration data from the management module, and perform configuration update of the main processing module based on the configuration data.

In the solution disclosed above, preferably, each of the at least one data forwarding unit acquires an event from its pending event queue, thereby receiving and parsing from the at least one external user system Data of one of the systems, and performing forwarding determination based on the parsing result, and forwarding the data to the corresponding primary data processing center and the based on the determination result and the priority of the at least two second communication links At least one of the alternate data processing centers.

In the solution disclosed above, preferably, the at least one data forwarding unit is further configured to forward data processing results from one of the primary data processing center and the at least one standby data processing center to a corresponding office Describe one of at least one external user system.

In the solution disclosed above, preferably, in response to each of the connection requests, the at least one listening unit randomly selects one of the at least one data forwarding unit and will associate an event corresponding to the connection request Join the queue of pending events in the selected data forwarding unit.

In the solution disclosed above, preferably, each of the at least one listening unit supports a simplex communication mode or a duplex communication mode.

In the solution disclosed above, preferably, the management device further includes:

a management instruction generation module, configured to generate a management instruction according to a command of the external management party;

a communication module, wherein the communication module is configured to transmit the management instruction to the data switching device. In the solution disclosed above, the configuration file management apparatus further includes: a storage module, where the storage module is configured to store the configuration file;

a communication module, configured to generate the configuration data based on the command of the external management and based on the configuration file, and transmit the configuration data to the management module.

The object of the invention is also achieved by the following technical solutions:

A method for disaster recovery backup of a data processing center, where the method for disaster recovery backup of a data processing center includes the following steps:

(A1) in response to a connection request initiated by at least one external user system, the communication access subsystem establishes at least one first communication link between the communication access subsystem and the at least one external user system, and Establishing at least two second communication links between the communication access subsystem and each of the primary data processing center and the at least one alternate data processing center;

(A2) the communication access subsystem implements the at least one external user system and the primary data processing center and the at least one standby data by selecting one of the at least two second communication links based on a priority Data interaction between one of the processing centers. In the solution disclosed above, preferably, the communication access subsystem determines and maintains an association relationship between the at least one first communication link and the at least two second communication links.

In the solution disclosed above, preferably, the step (A2) further comprises: when the primary data processing center is working normally, the communication access subsystem selects to forward to the primary data processing center from the At least one external user system's data.

In the solution disclosed above, preferably, the step (A2) further comprises: when the primary data processing center fails, the communication access subsystem selects to be in the at least one standby data processing center A forwarding of data from the at least one external user system completes the switching of the communication link.

In the solution disclosed above, preferably, the method uses at least two alternate data processing centers, the at least two alternate data processing centers having different priorities.

The system and method for data processing center disaster recovery backup disclosed by the present invention has the following advantages: The communication access subsystem determines which data to forward data to according to the priorities of the at least two second communication links. The switching between the processing center, ie, the data processing center, is automatically completed on the communication access subsystem, and there is no need to re-establish the communication link, so the switching time is reduced, and the impact generated during the switching process is reduced; The communication access subsystem and the data processing center are completed, so that they are transparent to the external user system, that is, the external user system does not need to perform any active or passive response, thereby significantly reducing the The impact of external user systems. DRAWINGS

The technical features and advantages of the present invention will be better understood by those skilled in the art, in which:

FIG. 1 is a schematic structural diagram of a system for disaster recovery backup of a data processing center.

2 is a schematic architectural diagram of a system for data processing center disaster recovery backup according to an embodiment of the present invention;

3 is a schematic structural diagram of a communication access subsystem in a system for data processing center disaster recovery backup according to an embodiment of the present invention;

4 is a flow chart of a method for data processing center disaster recovery backup according to the present invention;

2 is a schematic architectural diagram of a system for data processing center disaster recovery backup, in accordance with an embodiment of the present invention. As shown in FIG. 2, the system for disaster recovery backup of a data processing center disclosed by the present invention includes a primary data processing center, at least one standby data processing center, and a communication access subsystem. The primary data processing center is configured to implement data interaction with at least one external user system and process data from the external user system through the communication access subsystem. The at least one alternate data processing center is configured to implement data interaction with at least one external user system and process data from the external user system in an alternate manner by the communication access subsystem. The communication access subsystem is configured to establish a communication link between the primary data processing center and the at least one alternate data processing center and the at least one external user system, and manage and implement the communication link Switch.

Illustratively, in the system for data processing center disaster recovery backup disclosed by the present invention, the "data processing center" refers to a data processing server and/or a data processing system.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, when the at least one external user system initiates a connection request to the communication access subsystem, the communication access subsystem responds Establishing at least one first communication link between the communication access subsystem and the at least one external user system, and the communication access subsystem and the primary data processing center and the At least two second communication links are established between each of the at least one alternate data processing center.

Preferably, in the system for disaster recovery backup of a data processing center disclosed by the present invention, the The letter access subsystem determines and maintains an association relationship between the at least one first communication link and the at least two second communication links.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, each of the at least two second communication links has a priority.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, when the at least one external user system performs data with one of the primary data processing center and the at least one standby data processing center In communication, the communication access subsystem selects one of the at least two second communication links (eg, the higher priority one) based on the priority to forward data from the at least one external user system .

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, when the primary data processing center is working normally, the communication access subsystem selects to forward the source to the primary data processing center. Data for at least one external user system.

Preferably, in the system for data processing center disaster recovery backup disclosed in the present invention, when the primary data processing center fails, the communication access subsystem selects to be in the at least one standby data processing center. One of the forwarding data from the at least one external user system completes the switching of the communication link.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, the priority of the primary data processing center is higher than the priority of the at least one standby data processing center.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, the system for data processing center disaster recovery backup has at least two standby data processing centers, and the at least two standby data processing The centers have different priorities.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, when the communication access subsystem performs the handover, the communication access subsystem does not need to be in standby with the at least one One of the data processing centers re-establishes the communication link.

Illustratively, in the system for data processing center disaster recovery backup disclosed by the present invention, the communication access subsystem is further capable of automatically identifying and maintaining the at least one external user system and the at least one standby data. Processing the connection status of each of the centers and maintaining consistency of the communication links of the upper connection and the communication links of the lower connection (ie, when the communication of the at least one external user system with the communication access subsystem) After the link is disconnected, the communication access subsystem shall disconnect the corresponding communication a communication link between the communication access subsystem and the at least one alternate data processing center).

It can be seen from the above that in the system for disaster recovery backup of the data processing center disclosed by the present invention, the "standby mode" refers to the at least one standby data processing center when the primary data processing center fails. One of the data processing centers (ie, taking over the primary data processing center to undertake data processing tasks) processes data from the at least one external user system.

As can be seen from the above, optionally, according to the system for data processing center disaster recovery backup disclosed by the present invention, those skilled in the art can adjust the priority of the at least two second communication links for the at least An external user system specifies different data processing centers such that each data processing center (including the primary data processing center and the at least one alternate data processing center) achieves "two servers working in parallel" or "multiple servers working in parallel" "The operating state, and each other is a backup.

3 is a schematic block diagram of a communication access subsystem in a system for data processing center disaster recovery backup, in accordance with an embodiment of the present invention. As shown in FIG. 3, in the system for data recovery center disaster recovery backup disclosed by the present invention, the communication access subsystem 1 further includes a data switching device 2, a management device 3, and a configuration file management device 4. The data switching device 2 is configured to forward data from the at least one external user system to the primary data processing center and the at least one via the one of the at least two second communication links One of the alternate data processing centers. The management device 3 is for generating a management command based on a command of an external management party (e.g., a system monitoring device or a system administrator), and transmits the management command to the data switching device 2. The profile management device 4 is used to store and manage configuration files. The configuration file is preset by the external management party according to requirements.

As shown in FIG. 3, in the system for disaster recovery backup of a data processing center disclosed by the present invention, the data switching device 2 further includes a main processing module 5, a monitoring module 6, and a management module 7. The main processing module 5 is configured to establish the at least two second communication links in response to a connection request from the at least one external user system, and pass through the at least two second communication links. Implementing data interaction between the at least one external user system and one of the primary data processing center and the at least one alternate data processing center, and maintaining and managing the at least two based on the management instructions Two communication links. The monitoring module 6 is configured to monitor an operating state of other modules in the main processing module 5, and the abnormality occurs when an abnormality occurs in any one of the other modules The module is restarted. The management module 7 is configured to receive and process management instructions from the management device 3 and to communicate the management instructions to the main processing module 5.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, the management module 7 is further configured to receive a management instruction processing result from the main processing module 5, and process the management instruction. The result is transmitted back to the management device 3.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, the management module 7 is further configured to receive and process configuration data from the configuration file management apparatus 4, and process the processed The configuration data is transferred to the main processing module 5.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, the monitoring module 6 is further configured to create a submodule that monitors itself, and when the monitoring module 6 has an abnormality, The monitoring module 6 is restarted.

As shown in FIG. 3, in the system for disaster recovery backup of the data processing center, the main processing module 5 further includes at least one listening unit 8, at least one data forwarding unit 9, and a state maintenance unit 10. The instruction processing unit 11 and the configuration data maintenance unit 12 are managed. The at least one listening unit 8 is configured to listen to the connection request initiated by the at least one external user system, and establish the at least two second communication links in response to the connection request. The at least one data forwarding unit 9 is configured to process (eg, >3⁄4 text parsing) data (eg, messages) from the at least one external user system, and pass the processed data through the at least two second One of the communication links is transmitted to one of the primary data processing center and the at least one alternate data processing center. The status maintenance unit 10 is configured to periodically update the working status data in the shared memory corresponding to each unit in the main processing module 5 for use by the monitoring module 6. The management instruction processing unit 11 is for receiving and executing a management instruction from the management module 7, and transmits the management instruction execution result back to the management module 7. The configuration data maintenance unit 12 is configured to receive the configuration data from the management module 7, and perform configuration update of the main processing module 5 based on the configuration data (even if the configuration data is valid for the The other units in the main processing module 5 are used).

Preferably, each of the at least one data forwarding unit 9 acquires an event from its pending event queue, thereby receiving and parsing data from one of the at least one external user system, and performing forwarding determination based on the parsing result And forwarding the data to the corresponding primary data processing center and the at least one standby based on the determination result and the priority of the at least two second communication links One of the data processing centers.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, the at least one data forwarding unit 9 is further configured to be used from the primary data processing center and the at least one standby data processing center. The data processing result of one is forwarded to one of the corresponding at least one external user system.

Preferably, in the system for data processing center disaster recovery backup disclosed in the present invention, in response to each of the connection requests, the at least one listening unit 8 randomly selects the at least one data forwarding unit 9 One, and the event corresponding to the connection request is added to the queue of pending events of the selected data forwarding unit 9.

Preferably, in the system for data processing center disaster recovery backup disclosed by the present invention, each of the at least one listening unit 8 supports a simplex communication mode or a duplex communication mode.

As shown in FIG. 3, in the system for disaster recovery backup of a data processing center disclosed by the present invention, the management device 3 further includes a management instruction generation module 13 and a communication module 14. The management instruction generating module 13 is configured to generate a management instruction according to a command of the external management party (for example, a system monitoring device or a system administrator). The communication module 14 is configured to transmit the management command to the data switching device 2.

As shown in FIG. 3, in the system for disaster recovery backup of a data processing center disclosed by the present invention, the profile management device 4 further includes a storage module 15 and a communication module 16. The storage module 15 is configured to store the configuration file. The communication module 16 is configured to generate the configuration data based on the command of the external manager and based on the configuration file, and transmit the configuration data to the management module 7.

As shown in FIG. 2-3, the basic working principle of the system for data processing center disaster recovery backup disclosed in the present invention is as follows: in response to a connection request initiated by the at least one external user system, the communication access subsystem Establishing at least one first communication link between the communication access subsystem and the at least one external user system, and the communication access subsystem and the primary data processing center and the at least one standby data Establishing at least two second communication links between each of the processing centers; the communication access subsystem selecting one of the at least two second communication links based on priority (eg, a higher priority one) Implementing data interaction between the at least one external user system and one of the primary data processing center and the at least one alternate data processing center; when the selected data is When the management center fails, the communication access subsystem selects to forward data from the at least one external user system to another data processing center, thereby completing the handover of the communication link.

4 is a flow chart of a method for data processing center disaster recovery backup in accordance with the present invention. As shown in FIG. 4, the method for data processing center disaster recovery backup disclosed by the present invention includes the following steps: (A1) In response to a connection request initiated by at least one external user system, the communication access subsystem is in the communication connection Establishing at least one first communication link between the ingress subsystem and the at least one external user system, and establishing between the communication access subsystem and each of the primary data processing center and the at least one alternate data processing center At least two second communication links; (A2) said communication access subsystem implementing said at least one of said at least two second communication links (eg, a higher priority one) based on priority Data interaction between an external user system and one of the primary data processing center and the at least one alternate data processing center.

Illustratively, in the method for data processing center disaster recovery backup disclosed by the present invention, the "data processing center" refers to a data processing server and/or a data processing system.

Preferably, in the method for data processing center disaster recovery backup disclosed by the present invention, the communication access subsystem determines and maintains the at least one first communication link and the at least two second communication links The relationship between the roads.

Preferably, in the method for data processing center disaster recovery backup disclosed by the present invention, each of the at least two second communication links has a priority.

Preferably, in the method for data recovery fault recovery of the data processing center, the step (A2) further includes: when the primary data processing center is working normally, the communication access subsystem selects The primary data processing center forwards data from the at least one external user system.

Preferably, in the method for data recovery fault recovery of the data processing center, the step (A2) further includes: when the primary data processing center fails, the communication access subsystem selects One of the at least one alternate data processing center forwards data from the at least one external user system to complete the switching of the communication link.

Preferably, in the method for data processing center disaster recovery backup disclosed by the present invention, the priority of the primary data processing center is higher than the priority of the at least one standby data processing center.

Preferably, in the method for data processing center disaster recovery backup disclosed by the present invention, there are at least two standby data processing centers, and the at least two standby data processing centers have different priorities. Level.

Preferably, in the method for data processing center disaster recovery backup disclosed by the present invention, when the communication access subsystem performs the handover, the communication access subsystem does not need to be in standby with the at least one One of the data processing centers re-establishes the communication link.

Illustratively, in the method for data processing center disaster recovery backup disclosed by the present invention, the communication access subsystem is further capable of automatically identifying and maintaining the at least one external user system and the at least one standby data. Processing the connection status of each of the centers and maintaining consistency of the communication links of the upper connection and the communication links of the lower connection (ie, when the communication of the at least one external user system with the communication access subsystem) After the link is disconnected, the communication access subsystem shall disconnect the corresponding communication link between the communication access subsystem and the at least one alternate data processing center.

It can be seen from the above that in the method for disaster recovery backup of a data processing center disclosed by the present invention, when the primary data processing center fails, one of the at least one standby data processing center serves as a backup data processing center. Processing data from the at least one external user system (ie, taking over the data processing task in place of the primary data processing center).

As can be seen from the above, optionally, according to the method for data processing center disaster recovery backup disclosed by the present invention, those skilled in the art can adjust the priority of the at least two second communication links to be at least An external user system specifies different data processing centers such that each data processing center (including the primary data processing center and the at least one alternate data processing center) achieves "two servers working in parallel" or "multiple servers working in parallel" "The operating state, and each other is a backup.

Although the invention has been described in terms of the preferred embodiments described above, the implementations are not limited to the embodiments described above. It should be appreciated that, without departing from the spirit and scope of the invention,

Claims

Rights request

2 . The system for data processing center disaster recovery backup according to claim 1 , wherein when the at least one external user system initiates a connection request to the communication access subsystem, the communication access Establishing, by the subsystem, at least one first communication link between the communication access subsystem and the at least one external user system in response to the connection request, and processing the primary data in the communication access subsystem At least two second communication links are established between the center and each of the at least one alternate data processing center.

3. The system for data processing center disaster recovery backup according to claim 2, wherein said communication access subsystem determines and maintains said at least one first communication link and said at least two The relationship between the two communication links.

The system for data processing center disaster recovery backup according to claim 3, wherein each of the at least two second communication links has a priority.

The system for data processing center disaster recovery backup according to claim 4, wherein when the at least one external user system is in the main data processing center and the at least one standby data processing center The data access subsystem forwards data from the at least one external user system based on the priority selection of one of the at least two second communication links when performing data interaction.

6. The system for data processing center disaster recovery backup according to claim 5, wherein: The communication access subsystem selects to forward data from the at least one external user system to the primary data processing center when the primary data processing center is operating normally.

The system for data processing center disaster recovery backup according to claim 6, wherein when the primary data processing center fails, the communication access subsystem selects to the at least one standby data. One of the processing centers forwards data from the at least one external user system to complete the switching of the communication link.

The system for disaster recovery backup of a data processing center according to claim 7, wherein the priority of the primary data processing center is higher than the priority of the at least one standby data processing center.

The system for data processing center disaster recovery backup according to claim 8, wherein the system for data processing center disaster recovery backup has at least two standby data processing centers, the at least two Alternate data processing centers have different priorities.

10. The system for data processing center disaster recovery backup according to claim 9, wherein when the communication access subsystem performs the handover, the communication access subsystem does not need to be One of the at least one alternate data processing center reestablishes the communication link.

11. The system for data processing center disaster recovery backup according to claim 10, wherein the communication access subsystem is further capable of automatically identifying and maintaining the at least one external user system, and the at least one The connection status of each of the alternate data processing centers, and maintains the consistency of the communication link to the upper connection and the communication link to the lower connection.

12. The system for data processing center disaster recovery backup according to claim 11, wherein the communication access subsystem further comprises:

a data transfer device for forwarding data from the at least one external user system to the primary data processing center and the one via the one of the at least two second communication links At least one of the alternate data processing centers;

The system for the data processing center disaster recovery backup according to claim 12, wherein the data switching device further comprises: a main processing module, the main processing module configured to establish the at least two second communication links in response to a connection request from the at least one external user system, and through the at least two second communication links Implementing data interaction between the at least one external user system and one of the primary data processing center and the at least one alternate data processing center, and maintaining and managing the at least two based on the management instructions Second communication link;

a monitoring module, configured to monitor an operating state of other modules in the main processing module, and restarting the module in which an abnormality occurs when an abnormality occurs in any one of the other modules;

14. The system for data processing center disaster recovery backup according to claim 13, wherein the management module is further configured to receive a management instruction processing result from the main processing module, and the management The instruction processing result is transmitted back to the management device.

The system for disaster recovery of a data processing center according to claim 14, wherein the management module is further configured to receive and process configuration data from the configuration file management device, and process the processed data. The configuration data is transmitted to the main processing module.

The system for disaster recovery of a data processing center according to claim 15, wherein the monitoring module is further configured to create a submodule that monitors itself, and when the monitoring module is abnormal, The monitoring module is restarted.

The system for disaster recovery of a data processing center according to claim 16, wherein the main processing module further comprises:

At least one listening unit, the at least one listening unit is configured to monitor the connection request initiated by the at least one external user system, and establish the at least two second communication links in response to the connection request;

a state maintenance unit for periodically updating the shared memory with the main Working state data corresponding to each unit in the module for use by the monitoring module; managing an instruction processing unit, the management instruction processing unit is configured to receive and execute a management instruction from the management module, and manage the instruction The execution result is transmitted back to the management module;

18. The system for data processing center disaster recovery backup according to claim 17, wherein each of said at least one data forwarding unit acquires an event from its pending event queue, thereby receiving and parsing from the event Data of one of the at least one external user system, and performing forwarding determination based on the parsing result, and forwarding the data to the corresponding primary based on the determination result and the priority of the at least two second communication links One of a data processing center and the at least one alternate data processing center.

19. The system for data processing center disaster recovery backup according to claim 18, wherein said at least one data forwarding unit is further configured to process said primary data processing center and said at least one standby data The data processing result of one of the centers is forwarded to one of the corresponding at least one external user system.

20. The system for data processing center disaster recovery backup according to claim 19, wherein the at least one listening unit randomly selects the at least one data forwarding unit in response to each of the connection requests One of the events, and the event corresponding to the connection request is added to the queue of pending events of the selected data forwarding unit.

21. The system for data processing center disaster recovery backup according to claim 20, wherein each of said at least one listening unit supports a simplex communication mode or a duplex communication mode.

22. The system for data processing center disaster recovery backup according to claim 21, wherein the management device further comprises:

a communication module, wherein the communication module is configured to transmit the management instruction to the data switching device.

The system for the data processing center disaster recovery backup according to claim 22, wherein the configuration file management device further comprises:

a storage module, where the storage module is configured to store the configuration file; a communication module, configured to generate the configuration data based on the command of the external management and based on the configuration file, and transmit the configuration data to the management module.

A method for disaster recovery backup of a data processing center, the method for disaster recovery backup of a data processing center includes the following steps:

(A2) the communication access subsystem implements the at least one external user system and the primary data processing center and the at least one standby data by selecting one of the at least two second communication links based on a priority Data interaction between one of the processing centers.

25. The method for data processing center disaster recovery backup of claim 24, wherein the communication access subsystem determines and maintains the at least one first communication link and the at least two The relationship between the two communication links.

26. The method for data processing center disaster tolerant backup of claim 25, wherein each of the at least two second communication links has a priority.

The method for the data processing center disaster recovery backup according to claim 26, wherein the step (A2) further comprises: when the primary data processing center is working normally, the communication access sub The system chooses to forward data from the at least one external user system to the primary data processing center.

The method for the data processing center disaster recovery backup according to claim 27, wherein the step (A2) further comprises: when the primary data processing center fails, the communication access sub The system selects to forward data from the at least one external user system to one of the at least one alternate data processing center to complete the handover of the communication link.

29. The method for data processing center disaster tolerant backup of claim 28, wherein the primary data processing center has a higher priority than the at least one alternate data processing center.

30. The method for data processing center disaster recovery backup according to claim 29, wherein the method uses at least two standby data processing centers, and the at least two standby data processing Hearts have different priorities.

31. The method for data processing center disaster recovery backup according to claim 30, wherein when the communication access subsystem performs the handover, the communication access subsystem does not need to be One of the at least one alternate data processing center reestablishes the communication link.

32. The method for data processing center disaster recovery backup according to claim 31, wherein the communication access subsystem is further capable of automatically identifying and maintaining the at least one external user system, and the at least one The connection status of each of the alternate data processing centers, and maintains the consistency of the communication link to the upper connection and the communication link to the lower connection.