Using Amazon DMS to Migrate Databases to Redshift

 

Amazon Redshift is a cloud-based data warehousing solution. Businesses can transfer data from databases supported by Amazon Web Service Data Migration Service (AWS DMS) to Amazon Redshift. However, ensure that both the AWS account and the AWS region are in the same cluster as Redshift before the migration process can be initiated.

The DMS to Redshift target database migration begins with moving data to an Amazon Simple Storage Service (S3) with AWS DMS. After the files are placed in the S3 bucket, the intended tables are transferred automatically to the Amazon Redshift data warehouse. The S3 bucket and the Redshift database should be in the same AWS region. Where AWS CLI or DMS API is used for DMS Redshift migration, it is necessary to setup an AWS Identity and Access Management Path (IAM) to get access to S3.



In some cases, automated processes are provided in the DMS to Redshift which includes the following. 

·        Modifications made at source tables by incremental data

·        Data type mapping and generation of schema

·        The total load on database tables at the source

·        Synchronization of Change Data Capture (CDC) and full load processes

These factors have to be followed for DMS to Redshift database migration when Amazon Redshift database is used as the target AWS DMS. The AWS Management Console is used to launch the Amazon Redshift cluster after noting the password, user name, and the name of the database in the AWS account and the Amazon Redshift Cluster. The target endpoint of Amazon Redshift will only then be created with these values. The endpoint of Redshift used by the cluster is to be connected now to the AWS DMS replication instance via this network.

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