![]() AWS DMS uses endpoints to connect the source and target databases. By providing the replication instance’s name, VPC, and security group name and making it publicly accessible, we can create the replication instance.Īn endpoint is an access point (URL) of a database through which we can access the source and target database.It will automatically create standby replica of the replication instance in different availability zones.īelow is an example of creating a replication instance: AWS DMS provides high availability and failover support using a multi availability zone deployment. Data at rest is encrypted with AWS Key Management Service (AWS KMS) encryption.ĪWS DMS migrations consist of three components:Ī replication instance is simply a managed Amazon Elastic Compute Cloud (Amazon EC2) instance that hosts one or more replication tasks. AWS DMS enables heterogenous data migration with the help of AWS schema conversion tool.Almost all DBMS engines like Oracle, Microsoft SQL Server, MySQL, MariaDB, PostgreSQL, Db2 LUW, SAP, MongoDB, and Amazon Aurora are supported by AWS DMS.A backup replication is used as if the main replication server fails. Another benefit of AWS DMS is automatic failover.With AWS DMS we only pay for resources that we use since it has a pay-as-you-go model unlike traditional licensing plans with up-front purchase costs and ongoing maintenance fees. ![]() AWS DMS allows us to scale migration resources up or down as per requirements.AWS DMS can deploy, manage, and monitor all hardware and software needed for migration automatically so you can avoid conventional tasks like capacity analysis, procurement of hardware and software, system installation and administration and testing/debugging of systems.The following diagram illustrates the AWS DMS replication process. After that we schedule a task that runs on this sever to move the data from the source to the target database. We create a source and target database connection to tell AWS DMS where to extract form and load to with the help of a replication instance. For migrating a different database engine, we can use the AWS Schema Conversion Tool (AWS SCT) to convert the database schema to the new platform then utilize AWS DMS to migrate the data.Īt the basic level, AWS DMS is a sever in the AWS Cloud that runs replication software. With AWS DMS not only can you initially migrate the databases, but you can also replicate the ongoing changes. With AWS DMS, customers have the option to fully migrate their data to the cloud or utilize a combination of cloud and on-premises setups. An Introduction to AWS Database MigrationĪWS Database Migration Service, or AWS DMS, is a cloud services offering that migrates relational, NoSQL, and several other types of databases.
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