{"id":75008,"date":"2020-04-29T12:43:33","date_gmt":"2020-04-29T12:43:33","guid":{"rendered":"https:\/\/www.whizlabs.com\/blog\/?p=75008"},"modified":"2020-08-31T11:32:05","modified_gmt":"2020-08-31T11:32:05","slug":"aws-database-migration-service","status":"publish","type":"post","link":"https:\/\/www.whizlabs.com\/blog\/aws-database-migration-service\/","title":{"rendered":"Introduction to AWS Database Migration Service"},"content":{"rendered":"<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Many enterprises are facing the most prominent issue related to the management of their massive volumes of data. Conventional on-premises database management systems are not capable of addressing the emerging challenges of data management in present times. Therefore, the\u00a0AWS database migration service\u00a0offers a reliable alternative for leveraging the optimal power of <a href=\"https:\/\/www.whizlabs.com\/blog\/cloud-computing\/\" target=\"_blank\" rel=\"noopener noreferrer\">cloud computing<\/a>. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The database migration service of one of the leaders in the public cloud computing landscape is definitely a promising proposition. However, many enterprises are doubtful regarding the feasibility of shifting their databases to the cloud. In addition, the presence of other notable competitors of AWS creates further confusion for enterprises.<\/span><\/p>\n<blockquote>\n<p class=\"p1\" style=\"text-align: left;\"><span class=\"s1\">Enroll Now: <a href=\"https:\/\/www.whizlabs.com\/database-migration-to-aws-master-class\/\" target=\"_blank\" rel=\"noopener noreferrer\">Database Migration to AWS Master Class<\/a>\u00a0<\/span><\/p>\n<\/blockquote>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">So, if you are trying to find the guidance for implementation of the\u00a0AWS Database migration service, then you are at the right place! The following discussion would dive into the details of the AWS data migration service, such as definitions and pricing. In addition, the following discussion would also reflect on the working of database migration on AWS. Furthermore, the discussion would also reflect on the various benefits of the database migration service of AWS. In short, you can use the following article as an\u00a0AWS database migration service tutorial.\u00a0<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #ea7e02;color:#ea7e02\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #ea7e02;color:#ea7e02\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.whizlabs.com\/blog\/aws-database-migration-service\/#Definition_of_AWS_Database_Migration_Service_AWS_DMS\" >Definition of AWS Database Migration Service (AWS DMS)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.whizlabs.com\/blog\/aws-database-migration-service\/#Architecture_and_Working_of_AWS_Database_Migration_Services\" >Architecture and Working of AWS Database Migration Services\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.whizlabs.com\/blog\/aws-database-migration-service\/#Pricing_of_AWS_Database_Migration_Service\" >Pricing of AWS Database Migration Service\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.whizlabs.com\/blog\/aws-database-migration-service\/#Official_AWS_Pricing_Resources\" >Official AWS Pricing Resources\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.whizlabs.com\/blog\/aws-database-migration-service\/#Advantages_of_AWS_Database_Migration_Services\" >Advantages of AWS Database Migration Services\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.whizlabs.com\/blog\/aws-database-migration-service\/#Bottom_Line\" >Bottom Line<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"p1\" style=\"text-align: left;\"><span class=\"ez-toc-section\" id=\"Definition_of_AWS_Database_Migration_Service_AWS_DMS\"><\/span><span class=\"s1\">Definition of AWS Database Migration Service (AWS DMS)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\"><a href=\"https:\/\/aws.amazon.com\/dms\/\" target=\"_blank\" rel=\"noopener noreferrer\">AWS Database Migration Service<\/a> or AWS DMS is a web service that helps in the migration of data from one data source to another. The two data stores i.e., the source and the target, are known as endpoints. Users can migrate between the target and source data stores while using the same database engine. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">In addition, users could also utilize the migration service of AWS for migration between target and source endpoints using different database engines. However, it is also essential to note that users should have at least one endpoint on an AWS service for using the\u00a0AWS Database migration service. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Furthermore, you should also note that users cannot implement AWS data migration services for migration from one on-premises database to another on-premises database. In addition, users can also avail of the facility of continuous data replication with higher availability. You can also consolidate databases in a petabyte-scale data warehouse through streaming data to Amazon S3 and Amazon Redshift.\u00a0<\/span><\/p>\n<h3 class=\"p1\" style=\"text-align: left;\"><span class=\"ez-toc-section\" id=\"Architecture_and_Working_of_AWS_Database_Migration_Services\"><\/span><span class=\"s1\">Architecture and Working of AWS Database Migration Services\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">After outlining\u00a0what is AWS data migration service, it is important to reflect on its critical internal components. An understanding of the underlying components in the database migration service of AWS and the interactions between them can help in understanding the data migration process effectively. In addition, understanding the architecture of the AWS Data migration service can also help in resolving the related issues effectively. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The three crucial components in the architecture of\u00a0AWS DMS\u00a0include a replication instance, a replication task, and the source and target endpoints. Users can ensure AWS Database migration through the creation of required replication instance, endpoints, tasks, and endpoints in an AWS region. Let us reflect briefly on the three components for understanding the effectiveness of\u00a0DMS in AWS.<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4 style=\"text-align: left;\"><span class=\"s1\">Replication Instance<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The Replication instance is just a managed Amazon Elastic Compute Cloud (EC2) hosting more one or more replication tasks. One replication instance is capable of hosting one or replication tasks on the basis of a replication server\u2019s capability and characteristics of the migration task. AWS provides a wide range of replication instances with its database migration service. Therefore, users can select the ideal configuration for their use case effectively.\u00a0<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4 style=\"text-align: left;\"><span class=\"s1\">Source and Target Endpoints<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The next important component in\u00a0AWS Database Migration Service\u00a0refers to endpoints. The endpoints help in accessing the source or target data stores. Users can create an endpoint by providing information about the endpoint type, engine type, port, server name, credentials, and encryption methods. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">In addition, users should also test the endpoint connection before using it for a database migration task. Generally, the AWS data migration service verifies the existence of a database at a particular port and server name. In addition, the credentials for the endpoint should be successful in connecting to the databases having the essential privileges for performing the migration. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Upon successful testing of the endpoint connection,\u00a0DMS in AWS\u00a0downloads schema information and stores it for later use in task configuration. The schema information also includes table definitions, unique key definitions, and primary key definitions. You can also utilize the extra connection attributes for customizing different parameters of the endpoint, such as file size and logging detail.\u00a0<\/span><\/p>\n<figure id=\"attachment_75009\" aria-describedby=\"caption-attachment-75009\" style=\"width: 643px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-75009 size-full\" src=\"https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2020\/04\/aws-database-migration-service-architecture.png\" alt=\"AWS Database Migration Service Architecture\" width=\"643\" height=\"385\" srcset=\"https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2020\/04\/aws-database-migration-service-architecture.png 643w, https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2020\/04\/aws-database-migration-service-architecture-300x180.png 300w, https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2020\/04\/aws-database-migration-service-architecture-640x383.png 640w\" sizes=\"(max-width: 643px) 100vw, 643px\" \/><figcaption id=\"caption-attachment-75009\" class=\"wp-caption-text\">Image Source: https:\/\/docs.aws.amazon.com\/dms\/latest\/sbs\/CHAP_RDSOracle2Aurora.Architecture.html<\/figcaption><\/figure>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4 style=\"text-align: left;\"><span class=\"s1\">Replication Tasks<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The final addition in the architecture of\u00a0AWS Database Migration service\u00a0refers to replication tasks. The creation of a replication task is the final step before starting a migration process. Users have to specify certain task settings during the creation of a replication task. Readers should revisit the above-mentioned two components for a successful\u00a0AWS DMA step by step\u00a0implementation. Apart from the specification of replication instance and source and target endpoints, users should also specify the migration type options. Here are some of the common migration type settings that you can find with AWS.<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li1\"><span class=\"s1\">Full load option for migration of existing data.<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Full load + CDC for migration of existing data alongside replication of continuous changes.<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">CDC only for replication of data changes only.<\/span><\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The other important specifications for the\u00a0AWS DMA step by step\u00a0implementation for the replication task include the following.<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li1\"><span class=\"s1\">Options for target table preparation mode.<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">LOB (Large Binary Objects) mode options.<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Table mappings.<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Data transformations.<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Amazon CloudWatch logging options.<\/span><\/li>\n<li class=\"li1\"><span class=\"s1\">Data validation.<\/span><\/li>\n<\/ul>\n<blockquote>\n<p style=\"text-align: left;\">Preparing to become an AWS Certified Database Specialist? Follow this definitive guide for the <a href=\"https:\/\/www.whizlabs.com\/blog\/aws-certified-database-specialty-exam-preparation\/\" target=\"_blank\" rel=\"noopener noreferrer\">AWS Certified Database Specialty Exam Preparation<\/a> and get ready for the exam.<\/p>\n<\/blockquote>\n<h3 class=\"p1\" style=\"text-align: left;\"><span class=\"ez-toc-section\" id=\"Pricing_of_AWS_Database_Migration_Service\"><\/span><span class=\"s1\">Pricing of AWS Database Migration Service\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Now, the most important concern of readers should be pointing towards\u00a0DMS pricing. Cost-effectiveness is one of the foremost determinants in the selection of cloud computing solutions.\u00a0AWS Database Migration service\u00a0provides low-cost services for easier and highly secure migration of databases. If you are migrating databases to Amazon DocumentDB, Amazon Aurora, Amazon DynamoDB or Amazon Redshift, then you can get the benefits of DMS free for six months. Let us reflect further on the different costs that you have to incur for using DMS.\u00a0<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">On-demand Instances<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The facility of on-demand instances in AWS Data migration service helps users reduce costs of planning, purchase, and maintenance for hardware. In addition, the support for continuous data replication and enabling multiple availability zones increases the fault tolerance of the replication stream.\u00a0<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Storage<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The pricing of DMS also depends on the cost of storage. The price for general purpose SSD storage would be $0.115 for every GB per month for a single availability zone. The pricing for multiple availability zones is $0.23 per GB for every month.\u00a0<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Data Transfer<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Another aspect of the pricing of\u00a0AWS Database migration service\u00a0refers to data transfer. The data transfer services are free with AWS data migration services. The transfer of data between the databases in the Amazon EC2 and Amazon RDS instances in the same availability zone and the AWS Data migration service is free. The standard transfer rates are applicable for migration of source database to target database in different availability zones or outside of AWS.\u00a0<\/span><\/p>\n<h3 class=\"p1\" style=\"text-align: left;\"><span class=\"ez-toc-section\" id=\"Official_AWS_Pricing_Resources\"><\/span><span class=\"s1\">Official AWS Pricing Resources\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Readers could also make the most of pricing resources on the official AWS website, such as TCO Calculator, Economics Resource Center, and the AWS Pricing Calculator. TCO Calculator helps in the accurate estimates of your total cost of ownership. The AWS Pricing Calculator can help you find the monthly AWS costs with DMS. The Economics Resource Center provides helpful information for switching to AWS.\u00a0<\/span><\/p>\n<blockquote><p>Try Now: <a href=\"https:\/\/www.whizlabs.com\/aws-certified-database-specialty\/free-test\/\" target=\"_blank\" rel=\"noopener noreferrer\">AWS Certified Database Specialty Free Test<\/a><\/p><\/blockquote>\n<h3 class=\"p1\" style=\"text-align: left;\"><span class=\"ez-toc-section\" id=\"Advantages_of_AWS_Database_Migration_Services\"><\/span><span class=\"s1\">Advantages of AWS Database Migration Services\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Finally, readers should also focus on the benefits of the\u00a0AWS Database migration service\u00a0for clarifying their doubts regarding the effectiveness of DMS.\u00a0<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Simplicity<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The foremost advantage related to DMS is the simplicity of using it. You don\u2019t have to install any drivers or applications or make any changes in the source database. DMS ensures management of all complexities of the migration process, such as the automatic replication of data changes.\u00a0<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Practically No Downtime<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The next critical benefit of AWS Data migration service refers to minimal downtime. The database migration service of AWS ensures continuous replication of data changes to the target. In addition, the target database will continue to be synchronized with the source according to the requirements of the user. The users could also switch over the database with convenience.\u00a0<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Comprehensive Database Support<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The AWS Data migration service can ensure the migration of data to and from many commercial and open-source databases. The support for homogenous and heterogeneous migrations helps in convenient database migration.\u00a0<\/span><\/p>\n<ul>\n<li class=\"p1\" style=\"text-align: justify;\">\n<h4><span class=\"s1\">Lower Costs<\/span><\/h4>\n<\/li>\n<\/ul>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">The low cost of the migration service is also one of the prominent factors that establish its efficiency. Users have to pay only for the computing resources and additional log storage. Support for databases also helps in achieving cost-effectiveness in comparison to the old database migration methods.\u00a0<\/span><\/p>\n<blockquote>\n<p style=\"text-align: left;\">Getting ready for the AWS Database Interview? Don&#8217;t forget to go through these frequently-asked <a href=\"https:\/\/www.whizlabs.com\/blog\/aws-database-interview-questions\/\" target=\"_blank\" rel=\"noopener noreferrer\">AWS Database Interview Questions<\/a> before sitting in the interview.<\/p>\n<\/blockquote>\n<h3 class=\"p1\" style=\"text-align: left;\"><span class=\"ez-toc-section\" id=\"Bottom_Line\"><\/span><span class=\"s1\">Bottom Line<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">So, if you are planning on shifting your database to the cloud, then you should think of\u00a0AWS Database Migration Service\u00a0as a reliable option. The reliability of this service, alongside the reputation of AWS in cloud computing, provides exceptional support for the first-time adoption of database migration services. <\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s1\">Users can establish the database migration infrastructure easily by specifying the individual components in the architecture of the AWS data migration service. In the long run, enterprises can make the most of the large cloud infrastructure and resources of AWS. Furthermore, the wide range of use cases in which it finds application provides the assurance of effectiveness according to an organization\u2019s database migration requirements.<\/span><span class=\"s3\"> <span class=\"Apple-converted-space\">\u00a0 \u00a0 \u00a0<\/span><\/span><\/p>\n<p class=\"p1\" style=\"text-align: justify;\"><span class=\"s3\"><span class=\"Apple-converted-space\">Clear your concepts of AWS Database Migration with the <a href=\"https:\/\/www.whizlabs.com\/database-migration-to-aws-master-class\/\" target=\"_blank\" rel=\"noopener noreferrer\">Database Migration to AWS master class<\/a> and get ahead. You can also try out for the <a href=\"https:\/\/www.whizlabs.com\/aws-certified-database-specialty\/practice-tests\/\" target=\"_blank\" rel=\"noopener noreferrer\">AWS Database Specialty practice tests<\/a> to check your preparation level for the AWS Certified Database Specialty certification exam.<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many enterprises are facing the most prominent issue related to the management of their massive volumes of data. Conventional on-premises database management systems are not capable of addressing the emerging challenges of data management in present times. Therefore, the\u00a0AWS database migration service\u00a0offers a reliable alternative for leveraging the optimal power of cloud computing. The database migration service of one of the leaders in the public cloud computing landscape is definitely a promising proposition. However, many enterprises are doubtful regarding the feasibility of shifting their databases to the cloud. In addition, the presence of other notable competitors of AWS creates further 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