Migrating Databases with AWS DMS To S3

AWS DMS (Amazon Web Service Database Migration Service) is a cloud-based service that facilitates the migration of databases from on-premises databases to the cloud or from one cloud provider to another. It also helps in migrating databases between relational databases, data warehouses, and NoSQL databases. By using AWS DMS for migration, users get all the benefits of the cloud-like increased speed and database performance, and security.

In July 2019, an announcement was made by Amazon that henceforth, AWS DMS would provide support for database migration through AWS DMS S3 (Amazon Simple Storage Service). Generally, S3 is used as the target database in DMS while creating data lakes and the data is later used by other services of AWS like Amazon EMR, Athena, and Redshift Spectrum. It has been the long-standing demand of businesses that a system is introduced that would assist database migration to S3. With the launch of AWS DMS S3, this was fulfilled.


Benefits of Migrating Databases with AWS DMS S3.

The main benefit of migrating databases with AWS DMS S3is unlimited storage facilities. Users can quickly scale up whenever there is a spike in demand without having to add to the existing hardware and software. Further, the charges are only for the resources used and unlike traditional databases, no flat fees are charged. This results in substantial savings in costs for organizations.

S3 provides highly optimized data protection, cost affordability, access management, and data replication functionalities. It also has the capability of carrying out limitless objects of Batch operations and database migration with AWS DMS to S3 can be carried out both within and outside the region

Prerequisites for AWS DMS to S3

Before initiating AWS DMS to S3, certain preconditions have to be met.

· Ensure that the S3 bucket is in the same AWS region as the DMS replication instance used in data migration.

· An IAM role should be present in the AWS account that can be accessed for writing or deleting to the target S3 bucket.

· The IAM role must have tagging access as objects being written in the S3 target bucket can then be tagged through the AWS DMS to S3.

· Make sure that the IAM has DMS – dms.amazonaws.com – as a part of the IAM as an additional entity.

Once these factors are taken care of the process of database migration with AWS DMS to S3can be started.

Speeding up AWS DMS to S3

The database migration must be so planned that there is no need for downtime or shutting down systems during business hours. Choose the most optimized tools for AWS DMS to S3database migration like AWS Direct Connect as it helps to set up an exclusive network connection between the data center and an AWS Direct Connect target location. Use the AWS Snowball tool for migrating large volumes of data.



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