What is hot-swap capability?

• A. The ability to hot-plug memory modules.
• B. The ability to change firmware without reboot.
• C. The ability to monitor power consumption remotely.
• D. The ability to replace components without shutting down the server.

Answer: (D)

Hot-swap capability means you can replace a component without powering down the server. It relies on hardware designed for live replacement and typically uses redundancy so the system stays online during the swap. A common example is swapping a failed disk in a RAID array or replacing a power supply while the other components keep the server running. Hot-swapping is about replacing an existing component, while hot-plug refers more generally to adding or removing devices while the system is on; hot-swap emphasizes the replacement action without downtime.