54. OCI to Azure Migration - Ayushi-srivastav/OCI GitHub Wiki

Steps for OCI to Azure Migration

1. Cost Calculator

Use Azure Pricing Calculator to estimate the costs involved in migrating resources from OCI to Azure. Adjust the estimates based on the specific requirements and configurations of your organization.

2. Activity and Assignments

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3. Detailed Steps

3.1 Document the Inventory in OCI (Architect)

  • List all resources in OCI including compute, storage, databases, networking, and other services.

  • Identify dependencies and interconnections among resources.

  • Prepare an inventory document with detailed configurations and settings.

3.2 Plan the Network Diagram in Azure (Architect)

  • Design the network architecture in Azure.

  • Define subnets, VNets, NSGs, and other network components.

  • Ensure high availability and disaster recovery requirements are met.

  • Create a network diagram for approval.

3.3 Take Sign Off (Architect)

  • Review the network design and migration plan with stakeholders.

  • Make necessary adjustments based on feedback.

  • Obtain formal sign-off to proceed.

3.4 Implement Landing Zone in Azure (Architect)

  • Set up the initial environment in Azure.

  • Configure resource groups, policies, and IAM roles.

  • Create foundational components like VNets, subnets, and management groups.

3.5 Create App/DB Services (Architect)

  • Provision required compute resources (VMs, App Services, etc.) and databases (Azure SQL, Cosmos DB, etc.).

  • Configure necessary services and applications in Azure.

  • Ensure compatibility and performance requirements are met.

3.6 Interconnect OCI and Azure (Architect)

  • Establish secure connectivity between OCI and Azure (e.g., VPN, ExpressRoute).

  • Verify network configurations and communication between environments.

3.7 Data Sharing Request (App/DB Admin)

  • Request the application/DB team to share their data for migration.

  • Ensure all necessary data is identified and ready for transfer.

3.8 Data Transfer (Architect)

  • Plan and execute the transfer of app/DB data/backup from OCI to Azure.

  • Use appropriate tools and services for data migration (e.g., Azure Data Migration Service).

  • Validate data integrity post-transfer.

3.9 Application/Database Setup (App/DB Admin)

  • Request the application/DB team to set up their application/database servers in Azure.

  • Perform necessary configurations and adjustments.

3.10 Subnet Interconnectivity (Architect)

  • Ensure proper interconnectivity between subnets within Azure.

  • Verify routing, security, and performance configurations.

3.11 App/DB Testing (Testing Team)

  • Perform comprehensive testing of application and database in the new Azure environment.

  • Ensure functionality, performance, and security requirements are met.

3.12 Development Environment (Dev Team)

  • Set up and validate the development environment in Azure.

  • Ensure all required tools and resources are available.

3.13 Test/UAT Environment (Testing Team)

  • Set up and validate the test/UAT environment in Azure.

  • Conduct user acceptance testing and resolve any issues.

3.14 Production Environment (Prod/Testing Team)

  • Set up and validate the production environment in Azure.

  • Ensure readiness for the final cutover.

3.15 Final Cutover (All Teams)

  • Plan and execute the final cutover to the new Azure environment.

  • Monitor the migration process and resolve any issues promptly.

3.16 Go/No-Go Decision (All Teams/Client)

  • Review the migration status and make a go/no-go decision.

  • Ensure all critical issues are resolved before going live.

3.17 Migration Completion (All Teams)

  • Confirm successful migration and transition to Azure.

  • Conduct a final review and post-migration support.