CN104239164A - Cloud storage based disaster recovery backup switching system - Google Patents

Abstract

The invention discloses a cloud storage-based disaster recovery switching system, comprising: a local data storage device, used to save the first data needed and generated when the local system is running; The first data is backed up to obtain the second data; the local application server is used to perform business capabilities during the operation of the local system; the remote application server is used to back up the local application in the local application server within a predetermined time interval; monitoring The platform is used to monitor whether a disaster occurs in the local environment, and in the case of a disaster, to determine whether the local system fails; the disaster recovery switching device is used to process the second data through the remote application server when the local system fails. Call to complete the switch from the local system to the remote system. Through the invention, the system failure caused by the disaster can be recovered quickly and the difficulty of system maintenance can be reduced.

Description

Disaster recovery switching system based on cloud storage

technical field

The invention relates to the field of electric power, in particular to a disaster recovery switching system based on cloud storage.

Background technique

Usually, in the initial stage of electric power engineering construction, it is necessary to plan and design the architecture of the application system, which plays an important role in the rapid implementation and promotion of electric power engineering. However, with the continuous advancement of informatization, a large number of information systems have been put into operation one after another, and the corresponding rapid expansion of information infrastructure, software and hardware has resulted in the increasing complexity of information systems. The disadvantages of lack of unified planning and design of IT infrastructure have gradually emerged, bringing There are a series of problems: When the local system is prone to failure in the event of a disaster, this will cause the local system to fail to continue to operate. If the local system’s data and applications are backed up locally, the backed up data needs to be manually backed up. The operation of the system can only be continued by transferring the application and application to a different place, and the recovery system of this backup method takes too long to run, and it makes the operation and maintenance of the information system more difficult, and the software and hardware resources of the information system are not fully utilized.

Aiming at the problem of too long running time of the recovery system in the traditional way of manually backing up data and applications in related technologies, no effective solution has been proposed yet.

Contents of the invention

The present invention provides a disaster recovery switching system based on cloud storage to at least solve the above problems.

The disaster recovery switching system based on cloud storage provided by the present invention includes: a local data storage device, which is used to save the first data required and generated when the local system is running; The data is backed up to obtain the second data; the local application server is used to perform business capabilities during the running of the local system; the remote application server is used to back up the local applications in the local application server within a predetermined time interval; the monitoring platform, It is used to monitor whether a disaster occurs in the local environment, and to determine whether the local system fails in the event of a disaster; the disaster recovery switching device is used to switch from the local application server to the remote application server in the event of a local system failure, through The off-site application server calls the second data to complete the switching from the local system to the off-site system.

Preferably, the replication technology used when backing up the first data and the local application is MetroMirror for remote data synchronous replication.

Preferably, the replication technology used when backing up the first data and the local application is a log-based structured data replication backup (Oracle Golden Gate, OGG for short).

Preferably, the replication speed when backing up the first data and the local application is sub-second replication.

Preferably, both the local data storage device and the remote data storage device use virtual resource pool technology when storing data, wherein the virtual resource pool refers to virtualizing various devices capable of storing data in the entire network into one storage device.

Preferably, both the local data storage device and the remote data storage device include one or more storage nodes.

Preferably, when both the local data storage device and the remote data storage device include multiple storage nodes, a dynamic hierarchical management mechanism is used to manage the multiple storage nodes, wherein the dynamic hierarchical management mechanism refers to The reliability of the storage process is dynamically graded and managed.

Preferably, both the local data storage device and the remote data storage device use the implicit key authentication (TTP-TPAKE) protocol storage encryption technology when storing data.

Preferably, the network where the local data storage device and the remote data storage device are located includes: a storage area network (SAN).

Preferably, the monitoring platform is also used to send alarm information to the operation and maintenance personnel of the local system when the local system fails.

Preferably, the ways of sending the alarm information include: SMS and email.

Preferably, the system further includes: a cloud storage management platform, which is used to regularly obtain the service status of each storage node of the local data storage device and the remote data storage device, and send the server status to the operation and maintenance personnel of the local system.

Preferably, the service conditions include: storage capacity, IOPS of read and write operations per second, read traffic, and write traffic.

Through the present invention, various local data used and generated during the operation of the local system and applications in the local system are backed up at the same time, and the backed up data and applications are stored in different places. When the system fails, the data and applications stored in other places can be used to enable the off-site system to ensure the normal operation of the system, which solves the problem of the traditional manual backup of data and application methods in related technologies, which takes too long to restore system operation, and then achieves The system failure caused by the disaster can be recovered quickly and the difficulty of system maintenance can be reduced.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a structural block diagram of a disaster recovery switching system based on cloud storage according to an embodiment of the present invention;

Fig. 2 is the structural block diagram of the disaster recovery switching system based on cloud storage according to the preferred embodiment of the present invention;

Fig. 3 is a schematic diagram of constructing a resource pool adopted by the cloud storage-based disaster recovery switching system according to a preferred embodiment of the present invention;

Fig. 4 is a schematic diagram of a process of implementing disaster recovery switching by the cloud storage-based disaster recovery switching system according to a preferred embodiment of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

Cloud storage refers to adding a virtual layer between the physical storage system and the server. Through this virtual layer, all storage can be managed and controlled and storage services can be provided to the server. The server does not directly deal with the storage hardware, and the increase, decrease, and split of storage hardware , Merging is completely transparent to the server layer. Therefore, this server-based storage virtualization is extremely configurable and flexible.

This embodiment mainly provides a disaster recovery switching system based on cloud storage, which is implemented based on cloud storage technology and is mainly used in the electric power field to realize timely data and application switching in the event of a disaster to ensure the normal operation of the system.

Fig. 1 is a structural block diagram of a disaster recovery switching system based on cloud storage according to an embodiment of the present invention. As shown in Fig. 1, the disaster recovery switching system based on cloud storage includes: a local data storage device 10 for saving the local system The first data required and generated during operation; the off-site data storage device 20, used to back up the first data within a predetermined time interval to obtain the second data; the local application server 30, used to execute business during the running of the local system capability; remote application server 40 is used to back up local applications in the local application server within a predetermined time interval; monitoring platform 50 is used to monitor whether a disaster occurs in the local environment, and in the case of a disaster, judge whether the local system Fault; disaster recovery switching device 60, used to switch from the local application server to the remote application server when the local system fails, and complete the switch from the local system to the remote system by invoking the second data through the remote application server.

Through the cloud storage-based disaster recovery switching system provided in this embodiment, when a system failure occurs in the power information system due to a disaster, the real-time backup of the local data of the local system (that is, the above-mentioned first data) and the local application can be obtained. The off-site data (that is, the above-mentioned second data) and off-site applications can be switched from the local system to the off-site system in time to ensure the normal operation of the power information system.

In this embodiment, the replication technology used when backing up the first data (also referred to as local data) and the local application may use remote data synchronous replication Metro Mirror.

For the convenience of understanding, here is a proper description of Metro Mirror replication technology: Metro Mirror (remote data synchronous replication technology) is based on enterprise storage servers, which can synchronize data on local storage through Fiber Channel with physical volumes as the basic unit Mirrored to the remote end for storage, this technology has the functions of high real-time performance, no data loss and full recovery. In practice, this technology can be used for logical volumes specified in two ESS or DS8000 systems separated by up to 103 kilometers. Under this architecture, any update to the source data disk can be synchronously mirrored to the target disk, where the source data disk and the target disk are connected through the Metro Mirror Path data channel. For this embodiment, this technology can perfectly mirror local data from a local data storage device to a remote data storage device, and synchronously mirror local applications from a local application server to a remote application server. Through this technology, the architecture of the disaster recovery switching system based on cloud storage can be well realized.

In this embodiment, the replication technology used when backing up the first data (local data) and the local application may also be a log-based structured data replication backup (Oracle Golden Gate, OGG for short). Preferably, when using the pair of first data (local data) and backing up the local application, the replication speed is sub-second replication.

For the convenience of understanding, here is an appropriate description of OGG replication technology and sub-second level replication: OGG replication technology has the function of realizing sub-second level real-time replication of a large amount of data. The source database and the target database are synchronized by applying these changes to the target database. OGG can realize sub-second real-time replication of a large amount of data between heterogeneous IT infrastructures (including almost all commonly used OS platforms and database platforms), and can realize one-to-one, broadcast (one-to-many), aggregation (many-to-one ), bidirectional, point-to-point, and cascading and other flexible topologies. In this embodiment, database-based disaster recovery replication can be realized through the OGG replication technology, and sub-second level replication of a large amount of data for disaster recovery services (that is, replication services of local data and local applications) can be realized.

In this embodiment, both the local data storage device 10 and the remote data storage device 20 can use the virtual resource pool technology when storing data. The virtual resource pool refers to the virtualization of various devices capable of storing data in the entire network. into a storage device.

Here, for the convenience of understanding, the virtual resource pool technology is properly described: the cloud-based virtual resource pool is built on a cloud computing hardware platform composed of a large number of computers, storage devices, dual-network card devices, and network devices. Physical resources such as storage devices are abstracted to realize unified scheduling and efficient utilization of heterogeneous physical resources based on the cloud computing platform, and then realize transparent physical deployment of applications such as system operation monitoring. In this way, a virtual resource pool can be built.

In this embodiment, both the local data storage device 10 and the remote data storage device 20 may include one or more storage nodes. Preferably, when both the local data storage device 10 and the remote data storage device 20 include multiple storage nodes, a dynamic hierarchical management mechanism can be used to manage the multiple storage nodes, wherein the dynamic hierarchical management mechanism refers to The reliability of nodes in the data storage process is dynamically graded and managed.

In this way, a mechanism for dynamic hierarchical management of cloud storage nodes can be constructed. Under this mechanism, the control node records the value of the structure representing the detected storage node according to the integrity detection results of the data stored in the storage node. Update, and then perform dynamic hierarchical management of storage nodes according to the value of each member variable in the structure.

At present, in the cloud disaster recovery application environment, user data is stored on servers managed and maintained by cloud service providers, and is no longer directly controlled by users, which increases the potential risk of data and other problems, such as : The system failure of the cloud service provider, the attack on the server, the leakage or sabotage of the internal staff of the cloud service provider, etc., may cause the leakage, damage or loss of user data. It can be said that data security has become a key factor limiting the further promotion and application of cloud disaster recovery in enterprises.

Based on this, in order to obtain better security performance, and more importantly, to improve storage security, in this embodiment, both the local data storage device 10 and the remote data storage device 20 can use implicit key authentication when storing data. (TTP-TPAKE) protocol storage encryption technology. In the TTP-TPAKE protocol, each communication entity and the trusted center share a memorable password, and then with the help of the trusted third party, each pair of communication entities generates their session keys. The protocol only needs four communications and does not need the support of tricky public key infrastructure, which has high computing and communication efficiency. In this embodiment, the proposed protocol can be extended to the situation of explicit key authentication, so as to realize the mutual authentication between the communication parties while generating the session key. Using the implicit key authentication TTP-TPAKE protocol greatly improves the confidentiality of disaster recovery data replication and ensures that business data will not be leaked during transmission. In this way, the security of storage is greatly improved.

In this embodiment, the network where the local data storage device 10 and the remote data storage device 20 are located may include: a storage area network (SAN). Of course, SAN is used here to obtain better backup results. In practical applications, these two devices can be placed in other networks, not limited to SAN.

In this embodiment, the monitoring platform 50 can also be used to send an alarm message to the operation and maintenance personnel of the local system when the local system fails. Preferably, the ways of sending the alarm information may include: SMS and email.

It should be noted that, in the above-mentioned cloud storage-based disaster recovery switching system, the resources used by various storage devices and application servers can be the integration or sharing of software and hardware resources of the power information system. In order to facilitate understanding, the integration or sharing of system software and hardware resources is properly described: (1) Information system software and hardware resource sharing is an operating system virtualization technology based on cloud computing, and each layer of software and hardware resources can be used as a resource The pool reflects that a resource pool in a sharable state is used to provide modular shared IT services to the outside world, and applications can use IT services to use background shared resources. For the IT service layer, there is a shared resource layer that can shield the background, reduce the application's dependence on software and hardware, and can fundamentally break the silo structure, so as to establish a flexible, efficient and robust information support platform. (2) The integration of software and hardware resources of the information system is a cloud-based storage virtualization technology, which can integrate various storage physical devices as a whole, and provide the function of permanently saving data and calling, that is, storage devices under the public control platform a collective. Using this resource integration technology, it is possible to uniformly model heterogeneous resources such as servers and storage devices from different vendors through the cloud computing resource management platform. The cloud computing resource management platform integrates various resource devices (such as: IBM minicomputer and its PowerVM virtualization platform, HP minicomputer and its vPar resource partition technology, PC server virtualization technology represented by VMware) and heterogeneous resources from different manufacturers Storage devices are abstracted into a unified resource model.

Fig. 2 is a structural block diagram of a disaster recovery switching system based on cloud storage according to a preferred embodiment of the present invention. As shown in Fig. 2, the system may also include: a cloud storage management platform 70 for regularly obtaining local data storage devices 10 and The service status of each storage node of the remote data storage device 20, and send the server status to the operation and maintenance personnel of the local system.

Preferably, the service conditions may include: storage capacity, IOPS of read and write operations per second, read traffic, and write traffic.

The main idea of the above-mentioned embodiments and preferred embodiments to solve the technical problems of this application is to simultaneously back up local data and local applications to remote locations with high real-time performance. In the case of a disaster, when a failure occurs, the local system that has failed can be switched to the remote system according to the remote data and remote applications saved in the remote place, so as to ensure the uninterrupted operation of the entire power information system. Here, a brief introduction to the technologies involved in the backup process of local data and local applications: (1) Data-level disaster recovery focuses on data, that is, after a disaster occurs, it can ensure that the original data of users will not be lost or damaged. In the event of damage, lower-level data-level disaster recovery can be realized by manually saving the backup data to a different place. For example, transporting the backup tape to a different place for storage on a regular basis is one of the methods. The more advanced data disaster recovery scheme relies on network-based data replication tools to realize asynchronous/synchronous data transmission between the production center and disaster recovery center, such as the use of data replication functions based on disk arrays. (2) Application-level disaster recovery is based on data-level disaster recovery, and the application processing capability is duplicated, that is, another support system is built in the remote disaster recovery center. The support system includes data backup system, backup data processing system, backup network system and other parts. Application-level disaster recovery can provide application takeover capabilities, that is, in the event of a failure in the production center, the application can be taken over in the disaster recovery center, thereby minimizing system downtime and improving business continuity.

The above cloud storage-based disaster recovery switching system will be described in more detail below in conjunction with preferred embodiments.

Before introducing this preferred embodiment in detail, some descriptions are made on the principles and advantages of cloud storage technology, so as to help understand the basis of the construction of the disaster recovery switching system of this preferred embodiment:

At present, the occurrence of catastrophic events has prompted various industries to pay more and more attention to the disaster recovery protection of their own business systems. Faced with the characteristics of high technical threshold for disaster recovery system construction, large capital investment, insignificant benefits, and the need for professional maintenance guarantees, most enterprise users are interested in This is prohibitive. With the rapid development of cloud technology, the overall management of underlying network, computing, and storage resources is realized with the help of cloud computing.

Compared with traditional storage devices, cloud storage is not just a piece of hardware, but a complex system composed of network devices, storage devices, servers, application software, public access interfaces, access networks, and client programs. Among them, each part takes the storage device as the core, and provides data storage and business access services to the outside world through application software. In order to ensure high availability, high reliability and economy, cloud storage usually uses distributed storage to store data, and redundant storage to ensure the reliability of stored data, that is, to store multiple copies of the same data. In addition, the cloud storage system can meet the needs of a large number of users at the same time, and can provide storage services for a large number of users in parallel.

Fig. 3 is a schematic diagram of the construction of the resource pool adopted by the disaster recovery switch system based on cloud storage according to the preferred embodiment of the present invention. Rural electricity and remote training each occupy one server, and the usual CPU load rate for auditing and international cooperation is only about 5%, while the average load of the servers for safety monitoring, remote training, and auditing is about 40%, and hardware resources are not fully utilized. The utilization and management of these application systems correspond to 4 business counterparts. During the construction of the resource pool, VMWARE virtualization technology is used to integrate various information equipment (storage, host, and operating system) to form a company-level information resource pool and realize "on-demand allocation" of business system resources. In this way, resources can be added or removed from the cloud resource pool at any time. The business system can be located anywhere in the resource pool. In the event of a disaster, the business system can switch to other locations in the cloud resource pool within seconds.

During the implementation process, through VMWARE virtualization technology, business systems such as safety supervision, auditing, comprehensive international cooperation plan, economic law, discipline inspection and supervision, agricultural power, and remote training were added to the virtualized resource pool, occupying only 4 servers. 4 server resources are saved, and equipment maintenance is performed by dedicated virtualized operation and maintenance personnel, which saves operation and maintenance costs. Now only 2 people are needed to maintain all business systems in the virtualized resource pool, and the professional ability It has been greatly improved than before.

In this preferred embodiment, the implementation process of VMWARE virtualization technology mainly includes: building a virtualization platform, installing VMWARE ESX4. Allocate storage space for the virtualization pool on the storage, deploy the virtualization management terminal program, allocate CPU, memory, hard disk, and network resources for the operating system platform from the virtualization pool through the management terminal, and support mainstream windows and Linux operating system platforms. Deploy corresponding business applications on the operating system. After testing and analysis, the operating system can be migrated to other servers in the virtualization pool within 1 minute, and can be restored within 1 minute after a failure. Moreover, the failover is automatically completed by the software without manual intervention.

Since the existing SAN networks are independent, each business system has its own independent SAN network when it is built. In this case, disaster recovery cannot be realized. In order to overcome this defect, the disaster recovery switching system provided by this preferred embodiment connects all SAN networks.

Fig. 4 is a schematic diagram of a disaster recovery switching system based on cloud storage according to a preferred embodiment of the present invention. As shown in Fig. 4, a SAN storage network based on cloud computing is built, and WWN numbers are used to divide the areas where each host is located (ZONE), each host and storage can be migrated to any location in the SAN network, without considering the specific physical location, and at the same time, without changing the current SAN network configuration, the resources located in the SAN network can be allocated on demand.

As shown in Figure 4, the HP EVA6400, MSA1500, HPEVA8400, and HP EVA4400 located in computer room A on the 5th floor of Xintong and computer room B on the 5th floor of Xintong are local data storage devices, and the EMC DMX-800 and MACROSTAR1620 located in the information computer room on the 16th floor of the provincial company are For remote data storage equipment, the servers located in computer room A on the 5th floor of Xintong and computer room B on the 5th floor of Xintong are local application servers, and the servers located in the information computer room on the 16th floor of the provincial company are remote application servers. The SVC in computer room B on the 5th floor of Xintong is equivalent to Disaster recovery switching equipment. The monitoring platform is located in computer room B on the 5th floor of Xintong Company. As for the cloud storage management platform, it can be installed in the information computer room on the 16th floor of the provincial company, or in the B computer room on the 5th floor of the Xintong Company. Of course, it can also be set independently. clearly shown.

In the traditional disaster recovery switchover process, when it is necessary to modify the configuration of the SAN switch, it needs to be processed at each device separately. Due to the large number of existing computer rooms and scattered locations, it is very difficult to modify the configuration or expand the configuration information. convenient. In order to overcome this defect, in this preferred embodiment, corresponding management addresses can be allocated for all SANs, and the SANs can be connected to the user's internal network through the management addresses, and the management functions will be developed after opening the read and write functions of the SNMP protocol. Then add it to the existing network management software, analyze the position corresponding to each parameter value in the MIB library of the SAN switch, and add it to the network management function. For the SAN network configuration that needs to be added or modified, submit it to the administrator, and the administrator will pass it through the network management. The software fills in the corresponding modification information, clicks Apply, and sends the SNMP information packet to the corresponding SAN switch. After receiving the information, the SAN switch modifies the parameter values in the MIB library, and the configuration is completed. Only the administrator needs to operate from the management console, which saves time and manpower, and simplifies the operation process.

In this preferred embodiment, the monitoring platform of the existing disaster recovery system is improved, and the SNMP protocol is opened on the business system host and storage and SAN switches, and a dedicated account required for monitoring is created on the host, and the monitoring platform is connected and adjusted. . In this way, the test monitoring system can monitor in real time changes in the amount of stored and replicated data and the running status of data replication. When a fault occurs, the SMS and email can be sent to the designated maintenance personnel by SMS or email.

Moreover, in this preferred embodiment, the traditional independent SAN networks are also connected together. In order to ensure the performance of the entire SAN network, a star (core-edge) secondary architecture connection method can be used to locate the SAN network. Plan the DOMAIN ID of the SAN switch, and divide the host and storage in the SAN network into ZONEs by WWN. After testing, the host is connected to any switch in the SAN network without changing the configuration. The storage space allocated by this host.

In this preferred embodiment, for a business system whose Recovery Time Objective (RTO) requirement is less than 1 hour, the database replication technology can be used to deploy the Goldengate database recovery software on the production and disaster recovery database servers. The production end is configured in data transmission mode, and the disaster recovery end is configured in data receiving mode. The so-called RTO refers to the time period between the time when the IT system crashes and the business stops after the disaster occurs, and the time when the IT system recovers to support the operation of various departments and resume operations is called RTO. After testing, the newly added data on the production side can be seen immediately from the disaster recovery side. During the implementation process, a storage of the same model can be deployed on the production side and the disaster recovery side, and data replication can be performed through storage replication software (the replication mode can be asynchronous), and dedicated network bandwidth can be allocated for storage replication. Data that is greater than the current network transmission capacity can be stored in the cache on the production side and transmitted to the disaster recovery side storage when the network is idle.

Moreover, in practical applications, through the cloud storage management platform, users can easily understand the service status of each node of the cloud storage system, including the capacity and performance of each node (read IOPS, write IOPS, read traffic, write traffic) and other information , so that users can know the resource information and running status in the domain in real time, so that they can control these resources; at the same time, it can let users know the abnormality of resources in time, and take appropriate measures to ensure their normal operation when necessary.

In this preferred embodiment, data can be stored hierarchically according to the importance of data, access frequency, retention time, capacity, performance and other indicators (the working principle of data hierarchical storage is based on the locality of data access), that is: the data Different storage methods are used to store them on storage devices with different performances, and the automatic migration of data objects between storage devices is realized through hierarchical storage management, so that infrequently accessed data is automatically moved to a lower level in the storage hierarchy, releasing Allocate more expensive storage space for more frequently accessed data.

In the early stage of system construction, the needs of dynamic allocation of resources, unified management, differentiated services, and monitoring operation and maintenance were considered. The system has a solid foundation, adopts cloud technology, and has no geographical restrictions. Resources located in the entire cloud environment can be dynamically deployed, managed and allocated in a unified manner. Encryption of data transmission is conducive to data security. The unified monitoring platform monitors the monitoring status of the equipment in real time. After a fault is detected, it can send an alarm in time through SMS, email, etc., and a special dispatcher will handle the disaster recovery when the fault occurs.

Therefore, this preferred embodiment provides a three-dimensional disaster recovery technology, which optimizes the entire process from the pre-construction, construction, and operation and maintenance stages of the system. The unified integration of various advanced technologies can provide differentiated services for enterprise data recovery. Moreover, the early design and construction provide a solid foundation platform for later operation and maintenance, which can overcome the shortcomings of the existing disaster recovery technology management capabilities, lack of centralized resource scheduling, and weak monitoring and alarm functions.

From the above description, it can be seen that the present invention achieves the following technical effects: cloud storage technology based on cloud computing can be used to provide manageable and operable disaster recovery switching services, which can be used by enterprises, institutions, and government departments Provide different levels of intra-city or remote disaster recovery switching services to ensure that customers' business data and key application systems can be quickly and accurately restored after a disaster occurs, and the continuous operation of customers' businesses is guaranteed. In addition, the disaster recovery switching service can further reduce the informatization cost of enterprises, institutions and government departments, and provide platform and tool support for government-level supervision and management and macro decision-making.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (13)

1. A cloud storage-based disaster recovery switching system, characterized in that it comprises: The local data storage device is used to save the first data required and generated when the local system is running; A remote data storage device, configured to back up the first data within a predetermined time interval to obtain the second data; The local application server is used to execute business capabilities during the running of the local system; The remote application server is used to back up the local application in the local application server within a predetermined time interval; The monitoring platform is used to monitor whether a disaster occurs in the local environment, and to determine whether the local system fails in the event of a disaster; The disaster recovery switching device is used to switch from the local application server to the remote application server when the local system fails, and complete the switch from the local system to the remote system by invoking the second data through the remote application server. 2. The disaster recovery switching system according to claim 1, characterized in that the replication technology used when backing up the first data and the local application is Metro Mirror for synchronous replication of remote data. 3. The disaster recovery switching system according to claim 1, characterized in that, the replication technology used when backing up the first data and the local application is a log-based structured data replication backup Oracle Golden Gate. 4. The disaster recovery switching system according to claim 3, characterized in that, the duplication speed when backing up the first data and the local application is sub-second level duplication. 5. The disaster recovery switching system according to claim 1, characterized in that, both the local data storage device and the remote data storage device use the virtual resource pool technology when storing data, wherein the virtual resource pool refers to all kinds of resources in the entire network A device capable of storing data is virtualized as a storage device. 6. The disaster recovery switching system according to claim 5, wherein both the local data storage device and the remote data storage device include one or more storage nodes. 7. The system according to claim 6, characterized in that, when both the local data storage device and the remote data storage device include a plurality of storage nodes, a dynamic hierarchical management mechanism is used to manage the multiple storage nodes, wherein the dynamic classification The management mechanism refers to dynamic hierarchical management based on the reliability of each storage node in the data storage process. 8. The disaster recovery switching system according to claim 1, wherein both the local data storage device and the remote data storage device use the implicit key authentication TTP-TPAKE protocol storage encryption technology when storing data. 9. The disaster recovery switching system according to claim 1, wherein the network where the local data storage device and the remote data storage device are located comprises: a storage area network (SAN). 10. The disaster recovery switching system according to claim 1, characterized in that the monitoring platform is also used to send alarm information to the operation and maintenance personnel of the local system when the local system fails. 11. The disaster recovery switching system according to claim 10, characterized in that, the ways of sending the alarm information include: SMS and email. 12. The disaster recovery switching system according to any one of claims 1 to 11, further comprising: The cloud storage management platform is used to regularly obtain the service status of each storage node of the local data storage device and the remote data storage device, and send the server status to the operation and maintenance personnel of the local system. 13. The disaster recovery switching system according to claim 12, wherein the service conditions include: storage capacity, IOPS of read and write operations per second, read traffic, and write traffic.