• Google Transfer Service allows us to copy data from another cloud (or from on-premises) to GCP with no coding effort. Incremental backups can also be set up, in a secure manner.
  • Data Transfer Appliance can be used (similar to AWS SnowBall) for larger data transfers (> 100 TB - upto 480 TB per device).
  • gsutil cp with the -m option (multi threaded) for efficient copying from on premises to cloud storage.