Well, I have gone through such questions before ND I will try my best to answer each and help with research.
- Will the source VM be operational after the replication/migration (I mean when we switch azure VM to primary)?
After the replication/migration, the source VM will still be operational but it will no longer be the primary VM for your application. Once you switch the Azure VM to primary, the source VM will no longer be used for your application.
- Will Azure Migrate just copy / paste the VM to Azure or it will change the config?
Azure Migrate will replicate the VM to Azure, but it will also modify the configuration of the VM as needed to make it work properly in Azure. This can include changes to network settings, storage configuration, and other parameters.
- Will host name be preserved or it will be new hostname?
Azure Migrate can preserve the hostname of the VM if you configure it to do so. By default, Azure Migrate will assign a new hostname to the migrated VM.
- Is it possible to preserve the same IP address?
Yes, it is possible to preserve the same IP address of the source VM during the migration. This can be done by assigning a static IP address to the Azure VM during the migration process.
Regarding the application you run, if the IP address or hostname changes, you will need to update the application configuration to point to the new IP address or hostname. You should work with the application developers to identify any configuration changes that need to be made after the migration.