Migrations Flashcards
What is DMS?
AWS Database Migration Service (AWS DMS) is a cloud service that makes it easy to migrate relational databases, data warehouses, NoSQL databases, and other types of data stores.
What happens to the source database on a DMS execution?
nothing, the source db remains available during the migration
Does DMS support heterogeneous migrations?
yes, there a lot of accepted sources and targets
What you must create to perform DMS replication task?
create an EC2 instance
Does DMS support continuous data replication?
yes, using CDC
What is SCT?
The AWS Schema Conversion Tool makes heterogeneous database migrations predictable by automatically converting the source database schema and a majority of the database code objects, including views, stored procedures, and functions, to a format compatible with the target database
When you don’t need to use SCT?
if you are migrating the same DB engine.
• Ex: On-Premise PostgreSQL => RDS PostgreSQL
• The DB engine is still PostgreSQL (RDS is the platform)
What are you allowed to do with Amazon Linux 2 AMI regarding on-prem strategies?
ability to download it as an iso VM
What can you do if you want to migrate existing applications into EC2?
VM import
What is ADS?
AWS Application Discovery Service automatically profiles on-premises applications to help plan your application migration to AWS quickly and reliably
What is SMS?
AWS Server Migration Service (SMS) is an agentless service which makes it easier and faster for you to migrate thousands of on-premises workloads to AWS.
What is DataSync?
AWS DataSync makes it easy for you to move data over the network between on-premises storage and AWS storage services both ways.
What are the two scenarios for using DataSync
move data from your NAS or file system via NFS or SMB (on-prem to AWS)
EFS to EFS cross region
