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Moving databases to the cloud can be a really challenging and risky process, and it can also interrupt business processes. But if the right tools and services are employed, a lot of time is saved and the process is made easy. Indeed, one of the solutions that has evolved into a best practice for organizations actively seeking a way to update the organization’s data architecture is the AWS Database Migration Service, or AWS DMS abbreviation.
In this blog, you will learn in detail about the AWS DMS service, including its workings, implementation scenarios, and how it can be of value to your business. This fully managed service makes it easier to migrate databases to the cloud, from on-premises, or from one cloud service to another.
Now, you will be in a better position to realize the issues associated with the database migration and assess if AWS DMS is the right option. If you are looking to deepen your knowledge, consider enrolling in our comprehensive AWS Course. Therefore, let’s begin and demystify how AWS DMS can help with your cloud migration process.
AWS Database Migration Service, or DMS, is 100% AC software that helps organizations move databases to the AWS cloud. It backs up and restores relational DBMS, NoSQL, data warehouses, and any other data repository types. DMS migrations are done with minimal source database interruption, and database copies of source databases can remain active during the cutover.
Currently, the service offers both structured transfers, including Oracle-Oracle or Microsoft SQL Server-Aurora, and unstructured transfers. DMS carefully handles all the issues of the transfer process, thereby achieving accuracy in the new system. It is most suitable for organizations that want to migrate to cloud infrastructure without the inconvenience. If you’re new to AWS, you might want to read What is AWS first to get a foundational understanding.
AWS DMS helps in this process by providing the extraction, copying, and transfer of data between source and target databases. The process starts with the definition of the endpoints of the source and target databases.
These endpoints describe how the application should connect to the particular database type, including the credentials as well as the locations of the servers. After endpoints are set, a structure of replication is initiated. This instance actually undertakes the physical data transfer, and it is a managed Amazon EC2 instance.
The replication process starts with the full dump load, where all the information from the source database is transferred to the replication agent. In this stage, it is possible to keep using the source database for additional transactions, whereas new transactions are performed at the target database. These changes are tracked and cached by DMS through what is known as change data capture (CDC). Once all the work in the full loads is done, DMS turns to the cache at the target database and writes the changes there in order to make the two databases identical.
AWS DMS also has a real-time monitoring option, so you can see how your migration is going and address any problems if there are any. The service also enables constant data replication, which means that it is a perfect solution to synchronize on-premises and cloud databases daily. While most of the complex process of data migration is handled by AWS DMS, it helps reduce the risk of errors and time for the migration process.
AWS DMS consists of three key components that work together to facilitate database migration:
By understanding these components, you can configure AWS DMS to meet your specific migration needs, ensuring a smooth and efficient transition to the cloud.
AWS DMS is suited in such cases where you have little time that the systems can be down while seeking to achieve a high and secure rate of data migration. This is appropriate when an organization is transitioning from an on-premise database solution to a cloud-based solution, especially when dealing with volume or complex issues.
AWS DMS can also help increase the synchronization frequency of data replication jobs, in which both the source and target databases should always be synchronized. Whether you are planning to migrate to Amazon RDS, Aurora, or Redshift, AWS DMS is your ideal option for database migration.
AWS Database Migration Service is a relatively general service to help databases move to the cloud. That is why the fact that both homogeneous and heterogeneous migrations are supported while downtime and security are maximal is unambiguous: this is a tool for organizations that need to upgrade their infrastructure.
AWS DMS is for the migration of databases to AWS, where the downtime is extremely low and continuous replication of data occurs. If you’re preparing for an AWS-related interview, you might find these AWS Interview Questions helpful.
No, AWS DMS is specifically designed to handle migration and replication of the data and not much into complex ETL operations.
Indeed, AWS DMS is serverless and manages the infrastructure, replication, and migration on behalf of the user.
What are DMS tasks?
DMS tasks describe the nature and specifics of the data transfer that are, tables and data to be transferred.
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