An organization is looking to migrate from a very large on-premises MySQL Database to an Amazon RDS MySQL Database cluster.
The organization is particularly concerned about minimizing the impact on application availability.
Since the migration data set is very large, the organization would also like to minimize any data transfer costs.
What is the optimal solution for performing data migration in this scenario?
Click on the arrows to vote for the correct answer
A. B. C. D.Answer: B.
Option A is incorrect because using DMS in this scenario is not the most optimal solution from an operational and cost-effective point of view.
It requires manual planning and execution of migration steps and additional infrastructure to support DMS.It also does not take advantage of database compatibility between the on-premises MySQL database and the Aurora MySQL cluster.
Option B is CORRECT because mysqldump utility can be used to create a backup of the existing on-premise database.
The backup can then be transferred in compressed form to the AWS cloud.Finally, mysqldump utility can be used to restore the data into an RDS instance.
Option C is incorrect because it is possible to create an Aurora Replica of an existing RDS MySQL database.
It is not possible to create an Aurora Replica of an on-premise MySQL database.
Option D is incorrect because it is not the optimal solution.
Using mysqldump utility is a more optimal solution from data transfer costs and application availability perspective.
Reference:
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/MySQL.Procedural.Importing.NonRDSRepl.htmlThe optimal solution for performing data migration from a very large on-premises MySQL Database to an Amazon RDS MySQL Database cluster while minimizing impact on application availability and data transfer costs is to use the AWS Database Migration Service (DMS).
Option A: Use the AWS Database Migration Service (DMS) to migrate the data AWS Database Migration Service (DMS) is a managed service that enables seamless migration of databases from various sources to AWS quickly and securely. DMS supports both homogenous and heterogeneous migrations between different database platforms. In this scenario, DMS can be used to replicate data from the on-premises MySQL database to the Amazon RDS MySQL database cluster without impacting application availability. DMS can also perform continuous data replication between the source and target database, minimizing the amount of data that needs to be transferred at once and reducing data transfer costs.
Option B: Use the MySQL mysqldump utility to copy the data The mysqldump utility can be used to create backups of MySQL databases. However, it is not a recommended solution for migrating large amounts of data. The process can be slow and resource-intensive, and may impact application availability during the migration process. Additionally, using mysqldump to transfer large amounts of data over the internet can result in high data transfer costs.
Option C: Create a read replica of the source database. After the migration is complete, promote the read replica to a stand-alone database. Creating a read replica can be a good way to migrate data without impacting application availability, but it is not the optimal solution in this scenario. Read replicas are designed for low-latency reads and can only be used for read-only workloads. In order to promote the read replica to a stand-alone database, a downtime would be required which will impact application availability. Moreover, creating a read replica does not minimize data transfer costs.
Option D: Use Percona XtraBackup utility to create backup files from the source database to an Amazon S3 bucket. Restore the Aurora MySQL DB cluster from those files. Percona XtraBackup is a utility that can be used to create backups of MySQL databases. However, it is not an optimal solution for migrating data to an Amazon RDS MySQL database cluster. The process can be time-consuming and resource-intensive, and may impact application availability during the migration process. Additionally, using Percona XtraBackup to transfer large amounts of data over the internet can result in high data transfer costs. Furthermore, restoring the data from an S3 bucket can take additional time and effort.
In summary, the optimal solution for performing data migration in this scenario is to use the AWS Database Migration Service (DMS) to minimize impact on application availability and data transfer costs.