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NALG: On Premise to AWS Cloud migration Case Study

NALG: On Premise to AWS Cloud migration

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Challenges

The primary challenges during the migration included:

1. Migrating File Servers with Permissions

  • The existing file servers contained terabytes of data with complex NTFS permissions. Maintaining data integrity and preserving the same user access permissions post-migration was critical.
  • Ensuring minimal disruption for end-users during the migration process.

2. Legacy ERP and Oracle Systems

  • The ERP system (Microsoft AX 2012) and Oracle database systems were legacy applications that were heavily integrated with on-premises infrastructure.
  • These applications required careful re-platforming for compatibility with AWS while ensuring performance and reliability.

3. Active Directory Migration

  • Migrating and extending on-premises Active Directory (AD) to AWS Cloud while maintaining user authentication, group policies, and domain trust relationships.

4. High Availability and Disaster Recovery

  • Implementing a scalable and redundant architecture across multiple AWS regions. o Ensuring a robust Disaster Recovery (DR) plan with minimal Recovery Time Objective (RTO) and Recovery Point Objective (RPO).
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Solution Architecture

The solution provided by iNTEL-CS addressed these challenges using a combination of AWS services and best practices:

1. File Server Migration

  • Migrated the file servers to Amazon FSx for NetApp ONTAP to maintain file system compatibility, performance, and NTFS permissions.
  • Used AWS DataSync for fast and secure data transfer while preserving metadata and permissions.
  • Verified user access with minimal downtime, ensuring a seamless transition for all end-users.

2. Legacy ERP System Migration

  • The ERP system (Microsoft Dynamics AX 2012) was re-platformed onto Amazon EC2 Windows instances for better performance and scalability.
  • Application data and backend databases were optimized using Amazon EBS for high IOPS storage.

3. Oracle Systems Migration

  • Migrated the Oracle databases to Amazon RDS for Oracle to reduce operational overhead and improve reliability.
  • Conducted schema validation and performance testing to ensure database consistency post-migration.

4. Active Directory Integration

  • Deployed AWS Directory Service (AD Connector) to extend on- premises AD to AWS Cloud seamlessly.
  • Ensured compatibility with existing group policies and authentication processes across the AWS infrastructure.

5. Disaster Recovery and High Availability

  • Built a DR environment in the me-south-1 region, replicating critical workloads, including ERP, Oracle systems, and file servers.
  • Amazon Route 53 was used for DNS failover to ensure high availability.

Key AWS Services Used

• Amazon FSx for NetApp ONTAP: Migrated file servers with NTF
permissions.

• AWS DataSync: High-speed data migration for large file servers.

• Amazon RDS for Oracle: Managed relational database with automated
backups and scaling.

• Amazon EC2: Hosted ERP systems (Microsoft AX 2012) for scalability and flexibility.

• AWS Directory Service (AD Connector): Seamless integration with on-
premises AD.

• Amazon Route 53: DNS routing and failover.

• Amazon CloudWatch: Centralized monitoring and alerting.

• AWS Systems Manager: Streamlined resource and patch management.

Benefits

1. Preserved Permissions and Data Integrity: Migrated file servers to FSx while maintaining NTFS permissions.

2. Improved Legacy System Performance: Optimized ERP and Oracle systems for cloud scalability.

3. Reduced Operational Overhead: RDS for Oracle eliminated database management burdens.

4. High Availability: Multi-region architecture ensured 99.99% uptime.

5. Enhanced Disaster Recovery: Replication to DR site with minimal RTO and RPO.

6. Centralized Identity Management: Active Directory seamlessly extended to AWS.

Outcome

The successful migration of file servers, ERP systems, Oracle databases, and Active Directory enabled NALG to achieve:

  • Enhanced operational performance and application responsiveness.
  • High availability with zero disruption to critical systems.
  • Seamless user experience with preserved file permissions and centralized authentication.
  • Cost savings by leveraging managed AWS services.

About us

iNTEL-CS is an AWS Advanced Partner specializing in cloud migrations, legacy system modernization, and managed services. By leveraging AWS's scalable infrastructure, iNTEL-CS delivers tailored solutions that optimize IT operations and drive business growth.

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