The physical layout of a cloud data center campus should include redundancies of all the following except ____________.

Generators provide essential backup power during utility outages and must be redundant to ensure continuous data center operation.

HVAC (heating, ventilation, and air conditioning) units are critical for maintaining optimal operating temperatures for IT equipment, requiring redundancy to prevent overheating and system failure.

Redundant generator fuel storage ensures that backup power systems can operate for extended periods during prolonged power outages, maintaining service continuity.

While physical security and controlled access points are crucial for a data center, multiple redundant points of personnel ingress are not a requirement for maintaining service availability and resilience in the same way that redundant power, cooling, or fuel supplies are. The focus for ingress is on secure management rather than failover redundancy for operations.