A company has 700 servers installed in 50 server racks in the datacenter. The Chief Technology Officer issued a memorandum to the IT department with a directive to reduce power and cooling…

Upgrading to 208V 3-phase power improves delivery efficiency but does not reduce the total number of servers running or their aggregate power consumption by 50%.

Hot aisle and cold aisle containment improves cooling efficiency by directing airflow, but it does not reduce the power consumed by the servers themselves.

Server virtualization allows multiple workloads to run as virtual machines on a single physical host, reducing the active server count from 700 physical units down to a fraction of that number. Fewer physical servers means proportionally less power consumed and less heat generated, making a 50% reduction in power and cooling achievable. This directly addresses the directive without requiring new hardware racks or physical redesign.

Replacing servers with blade servers increases density within the same racks but does not reduce the total number of active compute units or their combined power draw by 50%.