Preventing Data Corruption from Power Loss Which device is specifically designed to keep a computer powered during short outages so that data is not corrupted?

Introduction / Context:
Unexpected power interruptions can corrupt open files, damage file systems, and interrupt critical updates. Understanding which protective device actually supplies temporary power is essential for system reliability and data integrity.

Given Data / Assumptions:

• The goal is to prevent power interruption, not merely voltage spikes.
• Short-term ride-through power and orderly shutdown capability are desired.
• Typical office/home environments with desktop PCs and servers are considered.

Concept / Approach:

An Uninterruptible Power Supply (UPS) contains batteries and power electronics that instantly provide AC power when mains fail. This keeps the computer running long enough to save work or perform an automatic, graceful shutdown. Surge protectors only clamp transient spikes; grounding ensures safety and noise control but does not supply power; “sag protectors” mitigate brownouts but are uncommon and typically do not provide full backup energy.

Step-by-Step Solution:

Verification / Alternative check:

UPS units advertise runtime in minutes at specified loads, and management software logs switchover events, confirming continuous operation through brief outages.

Why Other Options Are Wrong:

Proper grounding improves safety but cannot sustain power. Surge protectors clamp spikes only. “Sag protectors” or line conditioners reduce dips but typically lack batteries. “None of the above” is incorrect because a UPS directly addresses the requirement.

Common Pitfalls:

Assuming a surge strip alone is adequate or ignoring battery maintenance in UPS units. Replace batteries per manufacturer guidance.

Final Answer:

UPS