KR101149310B1 - Backup system and system restoration method using the same - Google Patents

Abstract

PURPOSE: A backup system and a system recovery method using the same are provided to stably support a system by recovering downed system based on backup data in backup database. CONSTITUTION: Database stores IP(Internet Protocol) information, a host file, an environment file, and database information based on the control of a recovery module. If the system is down, the recovery module supplies a downloaded system to an external node based on backup information about the downed system in database.

Description

BACKGROUND SYSTEM AND SYSTEM RECOVERY METHOD USING THE SAME

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates generally to a system recovery technique, and more particularly, to a backup system capable of periodically storing backup data of a plurality of normally operating systems to reduce a recovery time of a down system, and a system recovery method using the same .

A system including an application server providing a service such as a mobile communication supplementary service generally has a redundancy structure such as an active-active or an active-standby structure in order to ensure the safety and sustainability of service provision. . Such a redundant system can also guarantee stable and continuous provision of services when both active-active systems are down or both active-standby systems are down (i.e., dual-down). I will not.

FIG. 1 conceptually shows a dual down in the conventional active-standby system. Referring to FIG. 1, a process of generating dual-down in the first system 20A among the plurality of active-standby systems 20A to 20D will be sequentially described. For example, a virtual IP (VIP) of the first system 20A is 10.10.XX.1, a real IP of the active system is 10.10.XX.2, The RIP is 10.10.XX.3.

When the active system of the first system 20A is down (step 1), the first system 20A connects the real IP of the first system 20A to the real IP of the active system 10.10.XX.2 (RIP) 10.10.XX.3 of the standby system to activate the standby system to continuously supply the service to the external nodes 10A to 10D (step 2). However, when the standby system is down (step 3), the first system 20A can not provide any more services to the external nodes 10A to 10D (step 4).

Dual-down of the redundancy system described above can occur due to a number of causes in hardware and / or software. The service of the duplicated system restores the service information data of the corresponding system providing the service, the IP information with the external node interlocked with the TCP / IP (Transmission Control Protocol / Internet Protocol) of the corresponding system, It can be resumed through recovery process. However, if the recovery process is performed for the downed system, the service restart time will be delayed.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method and a system for storing information necessary for providing a service in a backup database in advance in order to provide uninterrupted service of a downed system (e.g., a dual-downed redundant system) And to provide a backup system that can reliably and continuously provide a server provided by the system by immediately restoring the downed system, and a system recovery method using the backup system.

According to an aspect of the present invention, a backup system includes a recovery module and a plurality of databases. Each of the plurality of databases includes backup information including IP information, a host file, an environment file, database information, and external node interworking information of a corresponding system among a plurality of systems based on the control of the recovery module It can be stored periodically.

The recovery module may switch the IP of the downed system based on backup information for the downed system stored in the database corresponding to the downed system when any one of the plurality of systems is down And may provide it to an external node before the downed system goes down.

Wherein when the one of the systems is down, the recovery module performs an IP switch from the downed system to the backup system, performs a system switchover from the downed system to the backup system, A service provided to the external node may be provided to the external node before the system goes down. The recovery module may perform an IP switch from the downed system to the backup system by changing the host system file and IP of the backup system to the host system file and IP of the downed system.

Wherein the recovery module sets the virtual IP of the backup system to the virtual IP of the downed system and changes the real IP of the backup system to the real IP of the downed system, You can change it to IP.

Wherein the recovery module changes the environment file of the backup system based on the environment file of the downed system and changes the database link of the external node to a database corresponding to the downed system among the plurality of databases, The system can be switched from the downed system to the backup system.

The restoration module provides the service provided to the external node to the external node before the down system is shut down based on the database information of the down system and the external node information loaded from the database corresponding to the down system can do.

Each of the plurality of systems may be a SCP (Service Control Point) system of a mobile communication system.

According to an aspect of the present invention, there is provided a system recovery method using a backup system, including: (a) checking whether a plurality of systems are down; (b) a plurality of databases, each of the plurality of databases, based on the control of the recovery module, a backup including information of a corresponding one of a plurality of systems, a host file, an environment file, database information, Storing the information periodically; And (c) if the recovery module detects that the system of any one of the plurality of systems is down, extracting the backup information of the down system based on the backup information of the down system stored in the database corresponding to the down system, And providing the service provided to the external node to the external node before the down-system is shut down.

(C1) performing switching from the downed system to the backup system if any one of the systems is down; (c2) performing a system switchover from the downed system to the backup system; And (c3) providing a service provided to the external node to the external node before the downed system is down.

A system recovery method using a backup system according to an embodiment of the present invention can be implemented by executing a computer program for executing a booting method of the computer system stored in a computer readable recording medium.

As described above, the backup system and the system recovery method using the same according to the present invention can reliably and continuously provide the service provided by the system by restoring the downed system by using the backup data stored in the backup database in advance when the system is down There is an effect that can be done.

FIG. 1 conceptually shows a dual down in the conventional active-standby system.
2 conceptually illustrates storing backup information periodically from a plurality of systems in a backup system according to an embodiment of the present invention.
3 conceptually illustrates storing backup information periodically from a plurality of systems to a plurality of databases in a backup system according to an embodiment of the present invention.
4 illustrates a system recovery process of a backup system according to an embodiment of the present invention.
5 is a flowchart illustrating a system recovery method using a backup system according to an embodiment of the present invention.
6 is a configuration diagram of a mobile communication system in which a backup system according to an embodiment of the present invention is used as a backup system for system recovery of a mobile communication accessory service system.

Specific structural and functional descriptions of embodiments according to the concepts of the present invention disclosed in this specification or application are merely illustrative for the purpose of illustrating embodiments in accordance with the concepts of the present invention, The examples may be embodied in various forms and should not be construed as limited to the embodiments set forth herein or in the application.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

 For example, when one component 'transmits or outputs' data or signals to another component, the component may 'transmit or output' the data or signal directly to the other component, and at least one Quot; means that the data or signal can be " transmitted or outputted " to another element through another element of the system.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

2 conceptually illustrates storing backup data periodically from a plurality of systems 20A to 20D in a backup system 30 according to an embodiment of the present invention. The backup system 30 can receive and store backup data of each of the plurality of systems 20A to 20D based on a file transfer protocol (FTP) periodically from the plurality of systems 20A to 20D.

In other words, the backup system 30 according to the embodiment of the present invention is a system in which an IP (Internet Protocol) of a down-system is switched during dual-down of a system to provide a service instead of a service provided by the down- And maintains synchronization with each of the plurality of systems 20A to 20D.

The term "IP switching" means that the backup system 30 changes its virtual IP and real IP to virtual IP and real IP of the down system. The external node then recognizes the backup system 30 as the downed system. Therefore, if the backup system 30 provides the service provided by the downed system to the external node based on the backup data, the external node does not recognize the service interruption by the downed system and continuously receives the service .

The backup data of each of the plurality of systems 20A to 20D may be stored in a local disk included in the backup system 30. [ The local disk may include a plurality of databases (not shown) corresponding to each of the plurality of systems 20A to 20D.

In FIG. 2, the system restoration function of the backup system 30 according to the embodiment of the present invention will be described taking an example of a redundancy system having an active-standby structure as an example. However, the scope of the present invention is not limited thereto. For example, each of the plurality of systems 20A to 20D may be an active-active redundancy system, or may be a unified system. This can also be applied to FIGS. 3 to 6 to be discussed later.

The backup data refers to data or information necessary for restoring the down system when each of the plurality of systems 20A to 20D is down. The backup data for the downed system recovery includes a host file, IP information, environment file, database information, external node information (i.e., external node interworking information) of each of the plurality of systems 20A to 20D .

3 conceptually illustrates storing backup information periodically from a plurality of systems 20A to 20D to a plurality of databases DB1 to DB4 in the backup system 30 according to the embodiment of the present invention. Referring to FIG. 3, it can be seen that the backup data for each of the plurality of systems 20A to 20D is replicated in real time and stored in a corresponding database among the plurality of databases DB1 to DB4.

The backup system 30 may include a recovery module (not shown) for controlling the operations of the plurality of databases DB1 to DB4 and the plurality of databases DB1 to DB4. Wherein the recovery module is configured to, when any one of the plurality of systems (20A-20D) is down, to restore the downed system based on backup information for the downed system stored in a database corresponding to the downed system The IP may be switched so that the service provided before the down system is down can be continuously provided to the external node. That is, the backup system 30 provides the service provided by the downed system to the external node instead of the downed system, so that the service provided by the downed system can be seamlessly continued.

The restoration module may be divided into a plurality of partial restoration modules built in each of the plurality of databases DB1 to DB4, or may be implemented as a restoration module in the backup system 30. [ The recovery module may be implemented as a program or a script executed by a processor (not shown) of the backup system 30, but is not limited thereto.

4 shows a process of restoring the service system 20A of the backup system 30 according to the embodiment of the present invention. 5 is a flowchart illustrating a method of recovering a service system 20A using a backup system 30 according to an embodiment of the present invention. Hereinafter, the restoration process of the service system 20A of the backup system 30 according to the embodiment of the present invention will be described in detail with reference to FIG. 4 and FIG.

The backup system 30 periodically receives backup information (i.e., backup data) of each of the plurality of service systems 20A to 20D and stores the backup information in the plurality of databases DB1 to DB4 (S50). Then, the recovery module of the backup system 30 checks whether there is a down system among the plurality of service systems 20A to 20D (S51).

Whether or not there is a down system among the plurality of service systems 20A to 20D depends on whether or not an operation and management system (not shown) outside the backup system 30 is connected to the plurality of service systems 20A to 20D ) And notified to the backup system (30). However, the scope of the present invention is not limited thereto. For example, the backup system 30 may further include a separate configuration for checking whether there is a down service system among the plurality of service systems 20A to 20D. In addition, the recovery module may check whether there is a down system among the plurality of service systems 20A to 20D.

If any one of the plurality of service systems 20A to 20D is down, the recovery module performs an IP switch from the downed system to the backup system (S52). That is, the restoration module can restore the backup system 30A from the downed service system 20A by changing the host file and the IP of the backup system 30 to the host file and IP of the downed service system 20A. ) Of the IP address.

Referring to FIG. 4, an active system having a real IP (RIP) 10.10.XX.2 of the downed service system 20A with a virtual IP (VIP) 10.10.XX.1 and an active system having a real IP (RIP) 10.10.XX (VIP) 10.10.XX.99 of the downed service system 20A, the restoration module having a real IP address (RIP) 10.10.XX.99, when the standby system having the virtual IP (RIP) 10.10.XX.2 of the active system of the downed service system 20A by performing the IP switching by changing the real IP address 4).

When the IP transfer from the downed service system 20A to the backup system 30 is completed, the recovery module performs a system transfer from the downed service system 20A to the backup system 30 S53). The system switching of the backup system 30 includes a process of changing an environment file of the backup system 30 based on the environment file of the downed service system 20A and a process of changing the database link of the external node to the plurality of databases (DB1) corresponding to the downed system among the DBs DB1 to DB4 (step? In Fig. 4).

When the system switchover from the downed service system 20A to the backup system 30 is completed, the external nodes connected to the downed service system 20A connect the backup system 30 to the downed service system 20A ).

Then, the recovery module updates the down service system 20A based on the database information and external node information of the downed service system 20A loaded from the database DB1 corresponding to the downed service system 20A. May provide the service provided to the external node to the external node before the system crashes.

Each of the plurality of systems 20A to 20D may be a SCP (Service Control Point) system of a mobile communication system.

Each of the components of the backup system 30 according to the embodiment of the present invention, or a combination thereof, may be implemented using various types of packages. For example, each of the components of the backup system 30 according to an embodiment of the present invention, or a combination thereof, may be implemented as a package on package (PoP), ball grid arrays (BGAs), chip scale packages (CSPs) Plastic In-Line Package (PDIP), Die in Waffle Pack, Die in Wafer Form, Chip On Board (COB), Ceramic Dual In-Line Package (CERDIP), Plastic Metric Quad Flat Pack (MQFP) , Thin Quad Flatpack (TQFP), System In Package (SIP), Multi Chip Package (MCP), Thin Quad Flatpack (TQFP), Small Outline (SOIC), Shrink Small Outline Package A wafer-level fabricated package (WFP), a wafer-level processed stack package (WSP), and the like.

The system recovery method using the backup system 30 according to the embodiment of the present invention can also be implemented as computer readable code on a computer readable recording medium. The system recovery method using the backup system 30 according to the embodiment of the present invention can be implemented by executing a computer program for executing the system recovery method using the backup system 30 stored in the computer readable recording medium have.

A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. For example, computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like.

The computer readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. The functional programs, codes, and code segments for implementing the system recovery method using the backup system 30 according to the embodiment of the present invention can be easily deduced by the programmers of the technical field to which the present invention belongs have.

As described above, the backup system 30 and the system recovery method using the same according to the present invention can recover the down system by using the backup data stored in the backup databases DB1 to DB4 in advance, It is possible to provide stable and continuous service.

6 is a configuration diagram of the mobile communication system 100 in which the backup system 30 according to the embodiment of the present invention is used as a backup system for system recovery of the supplementary service systems 150A to 150C.

In the mobile communication system 100, the mobile communication terminal 110 includes a switching center 130, an HLR system (Home Location Register System) 140, a backup system 30, Service systems 150A-150C.

The backup system 30 in the mobile communication system 100 is connected between the HLR system 140 and the supplementary service systems 150A to 150C so that the supplementary service systems 150A to 150C If any one of them is down, the IP of the downed additional service system may be switched and the service performed by the downed additional service system may be immediately provided to the communication terminal 110.

In the foregoing, it has been described with reference to FIG. 6 that the backup system 30 according to the embodiment of the present invention can be used in the mobile communication system 100. However, the scope of the present invention is not limited thereto.

While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10A to 10D: external nodes 20A to 20D: dual systems
30: Backup systems DB1 to DB4: Backup databases
110: mobile communication terminal 120: base station
130: Switch 140: Home Location Register (HLR)
150A to 150C: Service Control Point (SCP)

Claims (15)

Recovery module; And
Each of which periodically stores backup information including IP address, Hosts file, environment file, database information, and external node interworking information of a corresponding system among a plurality of systems based on the control of the recovery module Comprising a plurality of databases,
The recovery module may switch the IP of the downed system based on backup information for the downed system stored in the database corresponding to the downed system when any one of the plurality of systems is down And providing a service provided to an external node to the external node before the downed system is down. The method of claim 1, wherein, when one of the systems is down,
Performing a switchover from the downed system to the backup system, performing a system switchover from the downed system to the backup system, and then performing a system switchover from the downed system to the backup system, To the external node. 3. The system of claim 2, wherein the recovery module
Wherein the switching of the IP from the downed system to the backup system is performed by changing the host system file and IP of the backup system to the host system file and IP of the down system. 4. The system of claim 3, wherein the recovery module
Setting the virtual IP of the backup system to the virtual IP of the downed system and changing the real IP of the backup system to the real IP of the downed system to change the IP of the backup system to the IP of the downed system The backup system comprising: 3. The system of claim 2, wherein the recovery module
Changing the environment file of the backup system based on the environment file of the downed system and changing the database link of the external node to a database corresponding to the downed system of the plurality of databases, And performs a system switch to the backup system. 3. The system of claim 2, wherein the recovery module
And provides the service provided to the external node to the external node before the system goes down based on the database information and external node information of the down system loaded from the database corresponding to the down system. Backup system. The system of claim 1, wherein each of the plurality of systems
(SCP) system of a mobile communication system. (a) checking whether the recovery module is down of a plurality of systems;
(b) a plurality of databases, each of the plurality of databases, based on the control of the recovery module, a backup including information of a corresponding one of a plurality of systems, a host file, an environment file, database information, Storing the information periodically; And
(c) if the recovery module detects that one of the plurality of systems is down, extracting the IP of the downed system based on the backup information of the downed system stored in the database corresponding to the downed system And providing a service provided to an external node to the external node before the down system is shut down. The method as claimed in claim 8, wherein, when one of the systems is down, the step (c)
(c1) performing an IP switch from the downed system to the backup system;
(c2) performing a system switchover from the downed system to the backup system; And
(c3) providing a service provided to the external node to the external node before the downed system is shut down. The method of claim 9, wherein the step (c1)
(c11) changing a host system file of the backup system into a host system file of the down system; And
(c12) changing the IP of the backup system to the IP of the downed system. 11. The method of claim 10, wherein step (c12)
Setting the virtual IP of the backup system to the virtual IP of the downed system and changing the real IP of the backup system to the real IP of the downed system to change the IP of the backup system to the IP of the downed system The method of claim 1, further comprising: 10. The method of claim 9, wherein step (c2)
(c21) changing an environment file of the backup system based on the environment file of the downed system; And
(c22) changing the database link of the external node to a database corresponding to the downed system among the plurality of databases. 10. The method of claim 9, wherein step (c3)
(c31) loading database information and external node information of the downed system from a database corresponding to the downed system; And
(c32) providing, to the external node, a service that the down system has provided to the external node before the system is down based on the database information and external node information of the loaded down system A system recovery method using a backup system. 9. The system of claim 8, wherein each of the plurality of systems
(SCP) system of a mobile communication system. A computer-readable recording medium storing a code for executing a system recovery method using the backup system according to any one of claims 8 to 14.

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