Data Transfers · Speed and advanced options
Does my Mac need to stay on and awake for a long transfer?
Short answer: Yes. Transfers run on your Mac, so they progress only while it's awake, online and Storage Studio is running — even cloud-to-cloud. If it sleeps nothing is lost; for long jobs, plug in and keep it awake.
Yes — transfers are run by Storage Studio on your Mac, so they only make progress while the Mac is awake, online and Storage Studio is running. That's true even for cloud-to-cloud transfers.
If the Mac sleeps part-way, nothing is lost: folder transfers carry on sending only what's missing, and a large download keeps the pieces it already has. For very long jobs, plug in to power and adjust your Mac's sleep settings so it stays awake while plugged in.
Related: What happens if I quit? · Large downloads that resume