Final answer:
The best technology option for this scenario is a backup generator, as it can provide continuous power to the server room for an extended period.
Step-by-step explanation:
In this scenario, the best technology option would be a backup generator. A backup generator can provide continuous power to the server room for an extended period, ensuring that it remains online even during a power failure. It can be set up to automatically kick in when there is a power outage, providing uninterrupted power supply.
Unlike a UPS (Uninterruptible Power Supply), which typically provides a shorter backup time, a backup generator can sustain power for a longer duration, such as three hours as required in this scenario. RAID (Redundant Array of Independent Disks) and clustering are technologies used for data storage and server redundancy, but they do not address the issue of power supply during a power failure.