User guide

Installation
The Rack-Mountable Compaq RA4000 draws cool air in through the front
door and exhausts warm air out through the rear of the server. Therefore, the
front door of the rack must be adequately ventilated to allow ambient room air
to enter the cabinet, and the rear door must be adequately ventilated to allow
the warm air to escape from the cabinet. Do not block the ventilation
apertures.
If a third-party rack is used, the following minimum requirements
should be observed to ensure adequate airflow and to prevent damage to the
equipment:
■ Front: The front door must have a minimum of 120 square inches of
unrestricted ventilation openings distributed evenly over the surface of the
door. If not, operate the equipment with the front door removed.
■ Side: The clearance between the installed equipment and the side panels
of the rack should be a minimum of 2.75 inches.
■ Rear: The clearance between the back and the wall should be a minimum
of 30 inches, and the equipment should be operated without a rear door.
If all the vertical space in the rack is not filled by components, the gaps that
are left will cause a change in airflow through the rack and across the
components. These gaps need to be covered with blanking panels.