A technician is installing multiple servers into a rack. The technician wants to install them so airflow is maximized to keep the servers running according to manufacturer recommendations. Which of…

Stacking servers with no gaps traps heat between units, causing exhaust air from one server to become the intake air for the next and rapidly raising ambient temperatures beyond safe operating limits.

A 1U gap between servers provides space for cool air to enter the front of each unit and warm exhaust to escape without immediately recirculating into the intake of an adjacent server. This approach aligns with standard hot-aisle/cold-aisle datacenter airflow management and manufacturer thermal requirements, reducing the risk of overheating and hardware failure.

Spreading servers arbitrarily over the rack length does not follow a consistent airflow strategy and leaves gaps that may be filled later in ways that disrupt thermal management.

Alternating server orientation would force hot exhaust air from rear-facing servers directly into the intakes of adjacent front-facing servers, creating dangerous hot spots and defeating structured airflow design.