When using online or replication-based migrations, what is the main goal?

• A. Minimize downtime and ensure data consistency during migrations.
• B. Avoid testing migrations entirely.
• C. Increase downtime to verify backups.
• D. Split migrations across multiple days.

Answer: (A)

Minimizing downtime while keeping data in sync during the migration is the key aim. Online or replication-based migrations work by continuously replicating changes from the source to the target, so users can keep working with production data while the migration happens. This means the final switch-over requires only a brief interruption and the target accurately reflects the latest state, reducing both service disruption and the risk of data loss or divergence. Testing and validation remain important, but the main purpose is to preserve availability and data consistency throughout the process. Scheduling the work over multiple days can be helpful, but it doesn’t define the primary goal; the focus is on keeping downtime small and data in sync.