hot-swap
verbUK /ˈhɒt.swɒp/
US /ˈhɑːt.swɑːp/
To change a part while the machine is still on.
You can hot-swap the battery without turning off the laptop.
OTHER MEANINGS
2. To replace a hard drive or power supply in a server without shutting it down.
The server lets you hot-swap a failed drive during business hours.
3. To switch a person or role instantly without stopping the activity.
The coach hot-swapped the goalkeeper at halftime.
4. A feature that allows parts to be changed safely while powered.
This hot-swap bay supports two extra SSDs.