20. Which of the following would enable a data center to remain operational through a multiday power outage?
Answer: A
Generator
A generator would enable a data center to remain operational through a multiday power outage by providing a continuous supply of electricity. Unlike other options, a generator can produce power for extended periods, making it essential for long-term outages.
A) Generator
This option is correct because a generator can supply power for as long as it has fuel, allowing the data center to maintain operations during prolonged outages. It serves as a reliable backup power source, ensuring that critical systems remain functional.
B) Uninterruptible power supply
An uninterruptible power supply (UPS) is typically designed to provide immediate backup power for short-duration outages, usually lasting only minutes to a few hours. While it protects against brief interruptions, it cannot sustain operations over multiple days without additional power sources.
C) Replication
Replication refers to the process of copying data to ensure availability and disaster recovery but does not directly provide power to keep a data center operational during an outage. Therefore, while important for data integrity, it does not address the power supply issue during a multiday outage.
D) Parallel processing
Parallel processing involves the simultaneous execution of tasks to improve computing efficiency but has no relevance to power supply. Like replication, it does not contribute to maintaining operational status during a power outage, making it an unsuitable choice.
Conclusion
A generator is the only option that can provide the necessary electrical power to keep a data center operational for an extended period, such as during a multiday power outage. Other options either do not supply power or are limited in duration, thus failing to meet the requirements of the question.