This screen allows you to select which type of Thin Import to perform.
Copy - Copies data from the source device to the destination volume. Changes made to the source during the copy process are copied to the destination volume. Copy does not dynamically update the destination volume after the copy is complete.
Copy/Migrate - Migrate is the same as copy, except that when the copy is finished all volume-server mappings are moved to the destination volume. The copied data (and its mappings) now reside on the destination volume. A Mirror is created from the destination volume back to the source after the migrate has completed. The Sync Remote Instant Replay license controls access to this feature.