The document provides an overview of AWS Database Migration Service (AWS DMS). It explains that AWS DMS allows users to easily and securely migrate or replicate databases to AWS. It describes how to use AWS DMS by creating a replication instance, specifying source and target endpoints, and then creating a migration task to transfer data from the source to target. Key aspects of the replication instance, endpoints, and tasks are also defined.

1. AWS
Data Migration Service
ARUN SIRIMALLA

2. Senior BigData/AWS DevOps Engineer
Organizer
• Hyderabad Hadoop/AWS user Group
• Portland Bigdata/AWS User Group
• Sydney Bigdata/AWS User Group
• Melbourne Bigdata/AWS User Group

3. Cloud Computing
• Cloud computing is the on-demand delivery of
compute power, database storage, applications and
other IT resources
• Its a cloud services platform via the internet with pay-
as-you-go pricing

4. Physical
Servers
X-category Sports Marketing

5. Why Cloud?
• No upfront investment in data centers and
servers
• Stop guessing capacity
• Stop spending money on running and
maintaining data centers
• Go global in minutes
• Disaster recovery

6. Overview
of Amazon
Web
Services

7. AWS Global Infrastructure

8. Regions and Availability Zones
• Amazon EC2 is hosted in multiple locations world-wide
• Each region is a separate geographic area
• Each region has multiple, isolated locations know as Availability zones
VPC
• Virtual datacenter in the cloud
• You can create your own public-facing subnet for your webservers and place your backend
systems such as databases or application servers in private subnet
• You can create a hardware virtual private network connection b/w your corporate datacenter
and AWS
• Assign custom IP address range in each subnet
• Create internet gateways
• Leverage multiple layers of security

9. S3
• S3 object based allows you to upload files
• Files can be 1 Byte to 5 TB
• Buckets have unique namespace for each region
• Amazon guarantees 99.99% availability
• Guarantees durability of 99.999999999%
RDS
• Allow you to create and scale Relational Databases
• You cannot SSH or RDP to RDS instance
• AWS does not provide you public or private IP address, instead gives you endpoint to connect
• Available and Durable, Secure, Inexpensive

10. What are AWS DMS and AWS SCT?
AWS Database Migration Service (AWS DMS) easily and securely migrates and/or
replicates your databases and data warehouses to AWS.
AWS Schema Conversion Tool (AWS SCT) converts your commercial database and data
warehouse schemas to open-source engines, Amazon Aurora and Amazon Redshift.
Converts and loads data warehouse data into Amazon Redshift.

11. When to use AWS DMS?
• Migrate business-critical applications
• Migrate from Classic to VPC
• Migrate data warehouse to Amazon Redshift
• Upgrade to a minor version
• Consolidate shards into Aurora
• Migrate from NoSQL to SQL, SQL to NoSQL or NoSQL to NoSQL

12. Homogeneous Database Migrations
The source and target database engines are the same
Oracle to Amazon RDS for Oracle, MySQL to Amazon Aurora, MySQL to Amazon RDS for
MySQL, or Microsoft SQL Server to Amazon RDS for SQL Server

13. Heterogeneous Database Migrations
The source and target databases engines are different
Oracle to Amazon Aurora, Oracle to PostgreSQL, or Microsoft SQL Server to MySQL migrations

14. Continuous Data Replication
Continuous data replication use cases can be Disaster Recovery instance
synchronization, geographic database distribution and Dev/Test
environment synchronization
You can use DMS for both homogeneous and heterogeneous data
replications for all supported database engines

16. Data Migration with AWS Database Migration Service
1. Create a Replication Instance
1. Initiates the connection between the source and target databases
• Processing power to migrate data from source database to target
2. Specify Source and Target Endpoints
• The source and target data stores can be on an Amazon EC2 instance, an
Amazon RDS DB instance, or an on-premises database
3. Create a Task
• Create new tables, tables to migrate

17. Replication Instance
• Initiates the connection between source and target, transfers the data,
caches any changes that occur on the source database during the
initial data load
• Parameters required for creating new replication instance
Ø Instance class
Ø VPC
Ø Replication Engine Version
Ø Allocated Storage
Ø Replication Subnet group
Ø VPC security Group
Ø Availability Zone

18. Endpoints
• AWS DMS accesses your data sources and targets
using endpoints
• Source endpoint allows DMS to read data from a
Database or from a non-database such as Amazon S3
• Target endpoint allows DMS to write data to a
database, or to a non-database target
Endpoint Options Source Engine
Ø Server name
Ø Port
Ø username
Ø password

19. Task
• Allows you to migrate existing data, replicate ongoing changes, or
replicate data changes only
• A task can contain one or more table mappings which define
what data is moved from the source to the target
• If a table does not exist on the target, it can be created
automatically
Options to create a Task
Ø Replication Instance
Ø Source endpoint
Ø Target endpoint
Ø Migration type
Ø Target table preparation Mode

20. DEMO

21. Thank you!