6. Configure the server (Configuring the server on page 53).
7. Install or deploy an operating system (Installing or deploying an operating system on page 53).
8. Register your server (Registering the server on page 54).
Operational requirements
Space and airflow requirements
To allow for servicing and adequate airflow, observe the following space and airflow requirements when
deciding where to install a rack:
• Leave a minimum clearance of 63.5 cm (25 in) in front of the rack.
• Leave a minimum clearance of 76.2 cm (30 in) behind the rack.
• Leave a minimum clearance of 121.9 cm (48 in) from the back of the rack to the back of another rack
or row of racks.
Hewlett Packard Enterprise servers draw in cool air through the front door and expel warm air through the
rear door. Therefore, the front and rear rack doors 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.
CAUTION:
To prevent improper cooling and damage to the equipment, do not block the ventilation openings.
When vertical space in the rack is not filled by a server or rack component, the gaps between the
components cause changes in airflow through the rack and across the servers. Cover all gaps with
blanking panels to maintain proper airflow.
CAUTION:
Always use blanking panels to fill empty vertical spaces in the rack. This arrangement ensures
proper airflow. Using a rack without blanking panels results in improper cooling that can lead to
thermal damage.
The 9000 and 10000 Series Racks provide proper server cooling from flow-through perforations in the
front and rear doors that provide 64 percent open area for ventilation.
CAUTION:
When using a Compaq branded 7000 series rack, install the high airflow rack door insert (PN
327281-B21 for 42U rack, PN 157847-B21 for 22U rack) to provide proper front-to-back airflow and
cooling.
Operational requirements 49
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