What should you consider if you have little tolerance for downtime during migration?

When there is little tolerance for downtime during a migration, implementing Log Replay Service stands out as the most suitable approach. This service allows you to capture changes made to the database during the migration process. By using log shipping and replaying the transaction logs, you can minimize downtime and ensure that the data remains consistent and up-to-date throughout the entire process.

The Log Replay Service works by continuously applying changes to the target database as they occur on the source database. This means that even if the migration takes some time, users can still access the source database, and once the cutover happens, there is minimal disruption. This is particularly crucial for businesses that require high availability and cannot afford significant downtime.

Other options, such as a basic backup strategy, a full data dump, or adding more servers, do not address the need to maintain availability during the migration. A basic backup might require a longer restoration time, a full data dump would necessitate stopping transactions, leading to downtime, and simply adding more servers does not directly facilitate a low-downtime migration strategy. Therefore, the use of Log Replay Service aligns best with the requirement for minimal downtime during the migration process.