Database Week at the San Francisco Loft Modernizing Databases with DMS Migrate your databases to AWS with minimal downtime. More than 80,000 databases have been migrated using AWS Database Migration Service. Speaker: Ben Willett - Solutions Architect, AWS

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Modernizing Databases with DMS
AWS Database Migration Service
Ben Willett, AWS Solutions Architect
Smitty Weygant, AWS Solutions Architect

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Migration used to be cost + complexity + time
Commercial data migration and replication software
Complex to set up and manage
Application downtime
Database-engine-specific application code

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What are DMS and SCT?
AWS Database Migration Service (DMS) easily and securely
migrates and/or replicate your databases and data
warehouses to AWS
AWS Schema Conversion Tool (SCT) converts your commercial
database and data warehouse schemas to open-source engines or
AWS-native services, such as Amazon Aurora and Redshift

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DMS Trajectory
• We have migrated over 90,000 unique databases, & counting
• Pace is accelerating!

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When to use DMS*?
Migrate
• Migrate business-critical applications
• Migrate from Classic to VPC
• Migrate data warehouse to Redshift
• Upgrade to a minor version
• Consolidate shards into Aurora
• Archive old data
• Migrate from NoSQL to SQL, SQL to
NoSQL or NoSQL to NoSQL
Targets:
Amazon
Dynamo DB
Amazon Redshift
Amazon S3
Amazon Aurora
*DMS is a HIPAA certified service
Amazon S3
Sources:

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Migration Validation
Pre-migration Assessment
• Checks migration task settings
prior to launch
• Alerts for potential issues, such as
unsupported data types
Post-migration Assessment
• Validates that all data selected for
migration migrated properly

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DMS + Snowball
Common use cases –
• Migrate large databases (over 5TB)
• Migrate many databases at once
• Migrate over slow network
• Push vs. Pull

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When to use DMS?
Replicate • Create cross-region Read Replicas
• Run your analytics in the cloud
• Keep your dev/test and production
environment sync

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Our Customers

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Scale Up Migration
RDS MySQL to Amazon Aurora Migration
Used DMS with on-going replication (CDC) to
migrate the data
Benefits:
• Aurora handles their larger data storage
requirements. Per regulations they are storing
120 TB of data for 2 years
• Reduced cost and improved performance when
compared to large MySQL instances

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Homogeneous Migration
RDS MySQL on EC2 Classic to VPC
Database ran an end-user application so could
not take downtime
Benefits:
• Leveraging CDC, they could decrease outage
per database to less than 5 mins
• 70 RDS instances have been seamlessly
migrated

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Split Migration
35 million members on it’s site
Many interdependent applications built over
the last 15 years with unique High IOPS
requirements
Migration from legacy cloud service to AWS
Combination of migration to MySQL on EC2
and Amazon Aurora
Benefits:
• DMS reduced the time required to migrate
thier databases by 40 percent
• Realized 55 percent cost savings by moving
some DB’s to Amazon Aurora

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Partners

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AWS database migration partners

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How does it work?

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Customer
premises
Application users
AWS
Internet
VPN
Start a replication instance
Connect to source and target
databases
Select tables, schemas, or
databases
® Let AWS DMS create tables,
load data, and keep them in
sync
® Switch applications over to
the target at your convenience
Keep your apps running during the migration
AWS
DMS

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Load is table by table
Replication instance
Source Target

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Change data capture (CDC) and apply
Replication instanceSource Target
Update
t1 t2
t1
t2
Transactions
Change apply after bulk load

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Source
Target
What else can I do?
Source
Source
Replication instance

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What else can I do? Target
Source Target
Target
Replication instance

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Source
Take it all—or not
Target
Replication instance

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Resources available to customers - DMS
Getting Started Guide: Review technical
documentation.
Features and benefits: Highlights DMS
features.
Pricing: Prices for replication instances,
storage, and data transfer.
Support: Post your questions to our
Support forum.
AWS SDK: Java-based API for creating and
managing data migration tasks.
AWS Command Line Interface: Start and
stop replication tasks with simple
commands.

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Thank You!