External drives · Speed, cables and hardware
What happens to the fast drive when my Mac sleeps?
Short answer: The drive normally stays connected through sleep. Storage Studio re-checks it on wake, and Transfer/Backup Drive copies resume automatically. If it's missing after waking, click Remount fast drive.
Normally the drive stays connected through sleep and is there when the Mac wakes. Storage Studio pauses its background checks during sleep and re-checks on wake, because drives may have changed while it slept. Drive-to-drive copies from Transfer Drive and Backup Drive resume automatically after sleep.
If the drive is missing after waking, click Remount fast drive in the popover, or unplug and reconnect it.