Migrating To Azure SQL Database

Kevin Feasel

2016-07-27

Cloud

John Sterrett discusses ways to migrate an on-prem database to Azure SQL Database:

This is great, except for the case I want to talk about today. What if you need to do a live migration with as little downtime (business wants no downtime) as possible with bigger databases. For example, say and existing 50 GB to 500GB database? Your only, option today is a good old friend of mine called transactional replication. You see, you can configure transactional replication and have the snapshot occur and all data in your current production system can be syncing live with your Azure SQL Database until it’s time to cutover which will make your cutover downtime as short as possible.

Below I will give you step by step instructions on how you can configure your subscriber. This would be your Azure SQL Database. The publisher would be your existing production database which could either be on-premise or an Azure VM.

Ah, replication:  the cause of, and solution to, all of life’s problems.  Or something.  Do read the whole thing.

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