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Multi-source heterogeneous disaster recovery: DSG empowers Harbin Bank to build a secure business defense line!
发布时间：2024.01.15

With the rapid development of information technology, ensuring business continuity and data security is becoming increasingly important. In order to address various unpredictable risks and disasters, Harbin Bank has introduced DSG's disaster recovery solution, using DSG SuperSync high-performance replication tool for large-scale databases to achieve database-level disaster recovery, thus ensuring the continuity and security of business operations.


Harbin Bank, established in 1997, is the first commercial bank to be listed in the Northeast region of China, and also the first urban commercial bank in the Northeast region to obtain foreign exchange trading rights. As one of the four market makers for RMB against the Russian ruble in the national interbank foreign exchange market, Harbin Bank is also the largest bank in China in terms of domestic ruble cash operations.

Over the years, Harbin Bank has always adhered to the service concept of "customer-centric", dedicating itself to providing customers with high-quality, efficient, and convenient financial services. At the same time, Harbin Bank also focuses on risk management and internal controls to ensure the bank's stable operation. With the continuous expansion of its business, in order to enhance its risk prevention and control capabilities and promote sustainable high-quality development, Harbin Bank is dedicated to building a database disaster recovery system to strengthen its foundation and comprehensively ensure the continuity of bank operations.

After extensive POC testing and evaluation, DSG became the data synchronization vendor for Harbin Bank's data disaster recovery construction, ensuring real-time remote replication backup of data to guarantee quick business switching and recovery. To ensure the effective implementation of the construction, Harbin Bank has also put forward corresponding requirements for the data synchronization tool.


Sync Tool Requirements


- Meet the functions of heterogeneous database support, cross-version and cross-platform compatibility, cascading, and reverse switching;

-  Ability to ensure continuous data synchronization during business primary and standby switch;

-  Delay during normal transaction time should not exceed 5 seconds;

-   Meet the consistency check of objects and data.


In this project, DSG SuperSync serves as a data synchronization tool, synchronizing real-time data from 11 business systems including SMS platform, mobile banking, smart customer service, opics, front-end, verification, electronic government bonds, city-wide deposit and withdrawal, unified identity authentication platform, fingerprint, and paperless to the disaster recovery center to ensure a delay of less than 5 seconds during non-batch processing. At the same time, a reverse link is configured to ensure the continuity of business systems during the switch between primary and standby databases. The flow direction of database synchronization includes:



Database synchronization flow direction

DB2→DB2；

Oracle→Oracle；

Mysql→Mysql；

MongoDB→DB2；

DB2→MongoDB；

SQLServer→SQLServer。


In addition, DSG also deployed the DSG DMP monitoring and management platform, greatly improving the timeliness of work and reducing resource consumption and saving operational costs through the fault SMS alarm function.

During the project implementation process, DSG provided a professional service team to support project delivery. After the successful implementation of the project, all equipment of Harbin Bank operates stably and reliably, and the system has disaster recovery capability.


Disaster recovery architecture





Deployment Instructions

- Deploy the data collection program in the highest performance mode on the production servers at both the source and target ends to maximize synchronization performance.

- The data collection agent collects data from the source database through TCP/IP and loads the obtained data into the disaster recovery database through TCP/IP.

- Deploy DSG SuperSync for bidirectional switching, which allows the production database to synchronize data to the disaster recovery database in one direction. In the event of a production database failure, data can be quickly switched back to the production database from the disaster recovery database, and then switched back after the business is restored.


Performance indicators

- The daily log volume of each business system is approximately 10-100G, with the majority of the large log volume concentrated during the batch processing phase at night.

- The delay of each business system is within 5 seconds.

- CPU usage <5%, and software memory usage <2G.

- In the event of equipment failure, the disaster recovery center can ensure 100% data availability.


工(gōng)具(jù)介绍





Tool instructions

DSG SuperSync is a high-performance data replication product that integrates multiple core technologies and has been developed and polished for more than a decade, with independent intellectual property rights. It is based on a completely logical replication method, using log analysis technology to generate DSG's unique data loading format, achieving business initial full synchronization and real-time incremental synchronization. It has the characteristics of multi-source heterogeneity, real-time replication, small resource occupation, flexible deployment, and convenient operation.

DSG SuperSync is suitable for most databases on the market, including mainstream commercial databases, domestic databases, open-source databases, and various types of files. The target end supports big data components, distributed databases, data warehouses, and data mid-end systems. It has comprehensive adaptability to customers' complex environments, and supports UNIX, Linux, Windows, AS400, virtualization, and cloud environments.


With the use of DSG's database disaster recovery solution and DSG SuperSync synchronization tool, Harbin Bank has achieved database-level disaster recovery, effectively supporting business continuity and security. This not only enhances the competitiveness of the enterprise but also provides customers with a more reliable service experience.

In the future, DSG will continue to innovate and improve, constantly improving its technology and service levels to help more enterprises achieve their data disaster recovery goals, ensuring the development and information security of their businesses.


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