In warm or cold standby, what is the typical trade-off compared to hot standby?

• A. Faster takeover but lower reliability.
• B. Requires more ground stations.
• C. Slower takeover but reduced power consumption.
• D. No difference.

Answer: (C)

When redundancy is implemented, you balance how quickly you can switch over against how much you spend on keeping the backup ready. In a hot standby setup, the backup is fully powered and synchronized, so a failure can be handled almost instantly. With warm or cold standby, the backup isn’t running at full capability or is powered down when idle. That means bringing it online and taking over requires some startup, reconfiguration, and state synchronization, which makes the takeover slower. The upside is lower power use and less continuous operation for the spare, reducing ongoing power costs and wear. So the typical trade-off is a slower takeover paired with reduced power consumption.