Which of the following BEST describes the function of a redundant power supply?

While some redundant power supplies might have diagnostic LEDs, this is a feature for monitoring, not their primary function of ensuring uptime.

Redundant power supplies typically draw more power overall due to having multiple units, not less.

A redundant power supply is designed to have multiple independent power supply units, where one or more can fail without interrupting the system's operation. This configuration ensures that if one power supply becomes a single point of failure, another unit automatically takes over, maintaining power to the system.

Redundant power supplies increase initial hardware cost and potentially power consumption, thus increasing, not reducing, total cost of ownership.