Daniel wants to improve the fault tolerance of a server in his datacenter. If he wants to make sure that a power outage doesn't cause the server to lose power, what is the first control he should deploy from the following list?

An uninterruptible power supply (UPS) should be Daniel’s first priority. Make sure that power isn’t disrupted during an outage and can be maintained for a short time until alternate power like a generator can come online is critical, and a UPS can provide that capability. A generator alone will definitely take longer to come online, resulting in an outage. Dual power supplies can help build resilience by allowing multiple power sources and avoiding issues if a power supply fails, but that isn’t the point of the question. A managed power distribution unit (PDU) provides remote management and power monitoring but will not prevent power loss in an outage.