Database Migration Checklist: Backups, Downtime, Testing, and Rollback Plans

Don’t Migrate Without a Checklist

Database migrations are high-stakes operations. Your database holds your customer records, financial history, inventory data, and operational workflows. A botched migration can mean lost data, extended downtime, and revenue impact that far exceeds the cost of doing it right the first time.

This checklist covers the critical steps San Antonio businesses should follow when moving databases to Azure.

Pre-Migration: Backups

Full Backup Verification

• Take a complete backup of all databases being migrated
• Verify backup integrity by performing a test restore to a separate environment
• Store backups in at least two physical locations (local + offsite or Azure Blob Storage)
• Document backup timestamps and confirm they include all recent transactions
• Confirm backup encryption is in place for any databases containing sensitive data

Backup Retention

• Keep pre-migration backups for at least 90 days post-migration
• Ensure backups are accessible independent of the on-premises infrastructure (in case hardware is decommissioned)
• Document the restore procedure so any team member can execute it if needed

Pre-Migration: Communication

• Notify all stakeholders of the migration timeline
• Identify all applications and services that connect to the database
• Coordinate with application owners on connection string changes
• Schedule the migration during your lowest-traffic window
• Prepare customer-facing communication if any service interruption is expected

During Migration: Downtime Management

Minimizing Downtime

• Use Azure Database Migration Service for online (continuous sync) migration where possible
• For offline migrations, confirm the maintenance window is sufficient — add 50% buffer time
• Have a clear “point of no return” decision threshold — know when to proceed and when to abort
• Monitor source database for unexpected transactions during the migration window

Downtime Communication

• Display maintenance notices in advance
• Provide a status page or communication channel for real-time updates
• Have a pre-drafted “migration complete” notification ready to send

Post-Migration: Testing

Data Validation

• Compare row counts between source and target for all tables
• Verify data integrity with checksum comparisons on critical tables
• Run key business queries and compare results against pre-migration baselines
• Test all stored procedures, functions, and views for correct execution
• Verify all indexes exist and are functioning in the target environment

Application Testing

• Update application connection strings to point to Azure
• Run application test suites against the new database
• Verify all CRUD operations work correctly from each connected application
• Test performance under simulated load — compare against pre-migration baselines
• Verify scheduled jobs, integrations, and automated processes are running correctly

Security Validation

• Confirm all user accounts and permissions are correctly migrated
• Verify encryption at rest and in transit is enabled
• Test that firewall rules properly restrict access
• Validate audit logging is capturing events as expected

Rollback Plan

Before You Start

• Document the complete rollback procedure in writing
• Define specific failure criteria that trigger a rollback decision
• Assign a single decision-maker for the go/no-go on rollback
• Estimate rollback time and confirm it fits within your maintenance window
• Test the rollback procedure in a non-production environment

Rollback Execution

• Restore from pre-migration backup to original on-premises environment
• Revert application connection strings to original database
• Verify all applications reconnect and function normally
• Communicate rollback status to stakeholders
• Schedule a post-mortem to identify what went wrong

Why You Want an Experienced Hand on This

Checklists are valuable, but they don’t replace judgment. When you’re in the middle of a migration at 2 AM on a Saturday and row counts don’t match, you need someone who’s seen that before and knows whether it’s a timing issue with replication lag or a genuine data loss event.

AI tools can help generate migration scripts and documentation. But the decision-making during a live migration — when to push forward, when to pause, when to roll back — requires human experience and calm under pressure.

Working With Us

We’ve guided San Antonio businesses through dozens of database migrations. We handle the planning, execution, and validation so your team can focus on their day jobs instead of stressing about data integrity.

Contact us to discuss your migration and we’ll walk through this checklist together with your specific environment in mind.