Temperature Requirements - HP Enterprise HPE ProLiant DL145 Gen11 User Manual

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CAUTION:

To prevent improper cooling and damage to the equipment, do not block the ventilation openings.

CAUTION:

When the vertical space in the rack is not filled by a server or rack component, the gaps between the

components can cause changes in airflow through the rack and around the servers. Cover all gaps with

blanking panels to maintain proper airflow. Using a rack without blanking panels results in improper

cooling which can lead to thermal damage.

If a third-party rack is used, observe the following additional requirements to ensure adequate airflow and prevent damage to the

equipment:

Front and rear doors—If the 42U rack includes closing front and rear doors, you must allow 5,350 sq cm (830 sq in) of holes evenly

distributed from top to bottom to permit adequate airflow (equivalent to the required 64 percent open area for ventilation).

Side—The clearance between the installed rack component and the side panels of the rack must be a minimum of 7.00 cm (2.75 in).

Wall mounting / desktop installation

To allow for servicing and adequate airflow, observe the following space and airflow requirements when installing the server on a wall or

desk:

Make sure that there is a minimum clearance of 20.00 cm (7.87 in) around the ventilation openings. Never cover these openings with

any type of materials.

The server draws in cool air through the ventilation openings on the front and expels warm air through the ventilation openings on the

back. Do not block these openings. Failure to observe this caution will result in improper airflow and insufficient cooling that can lead to

thermal damage.

Temperature requirements

To ensure continued safe and reliable equipment operation, install or position the system in a well-ventilated, climate-controlled

environment.

The maximum recommended ambient operating temperature (TMRA) for most server products is 35°C (95°F). The temperature in the room

where the rack is located must not exceed 35°C (95°F).

CAUTION: To reduce the risk of damage to the equipment when installing third-party options:

CAUTION:

Do not permit optional equipment to impede airflow around the server or to increase the internal

rack temperature beyond the maximum allowable limits.

Do not exceed the manufacturer's TMRA.

Subtopics

Extended ambient operating support

Depending on the approved hardware configurations, the server supports extended operating temperatures up to 45°C, comparable to

ASHRAE A3 and A4 classes. With limited configuration options, the server supports an operating temperature up to 55°C (131°F).

HPE ProLiant DL145 Gen11 Server User Guide

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