Migrate from SAP ASE to Amazon RDS for SQL Server using AWS DMS - AWS Prescriptive Guidance

Migrate from SAP ASE to Amazon RDS for SQL Server using AWS DMS

Created by Sergey Dmitriev (AWS)

R Type: Re-architect

Source: Databases: Relational

Target: Amazon RDS for SQL Server

Created by: AWS

Environment: PoC or pilot

Technologies: Databases; Migration

Workload: SAP

AWS services: Amazon RDS

Summary

This pattern provides guidance for migrating an SAP Adaptive Server Enterprise (ASE) database to an Amazon Relational Database Service (Amazon RDS) DB instance that's running Microsoft SQL Server. The source database can be located in an on-premises data center or on an Amazon Elastic Compute Cloud (Amazon EC2) instance. The pattern uses AWS Database Migration Service (AWS DMS) to migrate data and (optionally) computer-aided software engineering (CASE) tools to convert the database schema.

Prerequisites and limitations

Prerequisites

  • An active AWS account

  • An SAP ASE database in an on-premises data center or on an EC2 instance

Limitations

  • Database size limit: 64 TB

Product versions

  • SAP ASE version 15.x or 16.x and later. For the latest information, see Using an SAP Database as a Source for AWS DMS.

  • For Amazon RDS target databases, AWS DMS supports SQL Server versions 2008R2, 2012, 2014, 2016, and 2017 for the Enterprise, Standard, Workgroup, and Developer editions. For the latest information about supported versions, see the AWS DMS documentation. We recommend that you use the latest version of AWS DMS for the most comprehensive version and feature support.  

Architecture

 Source technology stack

  • An SAP ASE database that's on premises or on an Amazon EC2 instance

Target technology stack

  • An Amazon RDS for SQL Server DB instance

Source and target architecture

From an SAP ASE database on Amazon EC2 to an Amazon RDS for SQL Server DB instance:

From an on-premises SAP ASE database to an Amazon RDS for SQL Server DB instance:

Tools

  • AWS DMS - AWS Database Migration Service (AWS DMS) is a web service you can use to migrate data from your database that is on-premises, on an Amazon RDS DB instance, or in a database on an EC2 instance, to a database on an AWS service such as Amazon RDS for SQL Server or an EC2 instance. You can also migrate a database from an AWS service to an on-premises database. You can migrate data between heterogeneous or homogenous database engines.

  • CASE tools - For schema conversions, you can optionally use erwin Data Modeler or SAP PowerDesigner.

Epics

TaskDescriptionSkills required
Validate the source and target database versions.

DBA
Identify the storage requirements (storage type and capacity).

DBA, SysAdmin
Choose the proper instance type based on capacity, storage features, and network features.

DBA, SysAdmin
Identify the network access security requirements for the source and target databases.

DBA, SysAdmin
Identify the application migration strategy.

DBA, SysAdmin, App owner
TaskDescriptionSkills required
Create a virtual private cloud (VPC) and subnets.

SysAdmin
Create security groups and network access control lists (ACLs).

SysAdmin
Configure and start an Amazon RDS DB instance.

SysAdmin
TaskDescriptionSkills required
Migrate the database schema manually or use a CASE tool such as erwin Data Modeler or SAP PowerDesigner.

DBA
TaskDescriptionSkills required
Migrate data using AWS DMS.

DBA
TaskDescriptionSkills required
Follow the application migration strategy.

DBA, SysAdmin, App owner
TaskDescriptionSkills required
Switch the application clients over to the new infrastructure.

DBA, SysAdmin, App owner
TaskDescriptionSkills required
Shut down the temporary AWS resources.

DBA, SysAdmin
Review and validate the project documents.

DBA, SysAdmin, App owner
Gather metrics around time to migrate, % of manual vs. tool, cost savings, etc.

DBA, SysAdmin, App owner
Close out the project and provide feedback.

DBA, SysAdmin, App owner

References

Tutorials and videos