When connecting power for switches and storage equipment with two or more redundant power supplies in a rack?

Connecting both redundant power supplies to the same PDU defeats the purpose of redundancy, as a failure of that single PDU would cause the device to lose all power.

Providing a separate PDU for each device is generally excessive and inefficient, and does not directly address the proper connection for redundant power supplies on a single device.

Connecting redundant power supplies from a single device to different Power Distribution Units (PDUs) ensures that the device maintains power even if one PDU or its upstream power source fails. This configuration is a critical best practice for achieving high availability and fault tolerance in data center environments.

Limiting a rack to only one PDU eliminates all power redundancy options for devices within that rack, creating a single point of failure for the entire rack's power.