In SmartMigration, the business data synchronization between the source LUN and the target LUN includes initial synchronization and change synchronization. During the change synchronization process…

In SmartMigration, the business data synchronization between the source LUN and the target LUN includes initial synchronization and change synchronization. During the change synchronization process, the host needs to interrupt the business and send an I/O data write request to the storage side. The storage system starts the change synchronization and writes the business data changes to the source LUN and the target LUN at the same time through double writing.