Which system is crucial to prevent data loss during power interruptions in a data centre?

The Uninterruptible Power Supply (UPS) is crucial for preventing data loss during power interruptions in a data centre. A UPS provides backup power when the main power source fails, allowing servers and other important equipment to remain operational for a limited time. This continuity is essential for safeguarding data and maintaining ongoing processes until the power is restored or systems can be safely shut down.

In contrast, while the Power Distribution Unit (PDU) manages and distributes power to different devices, it does not provide a backup power source. Rack-mounted servers are the actual hardware that processes and stores data, but they rely on stable power to function correctly. The Data Backup System, although important for protecting and recovering data after loss or corruption, does not address the immediate need for power during interruptions. The UPS serves as a critical buffer to ensure that data and applications remain intact during sudden power fluctuations or outages, making it the key system for data loss prevention under such circumstances.