HP ProLiant t2500 Chassis Setup and Installation Guide

Planning the installation 6
CAUTION: When performing non-hot-
plug operations, you must power down the node and/or
the system. However, it may be necessary to leave the node powered up when performing other
operations, such as hot-plug installations or troubleshooting.
Space and airflow requirements
To enable servicing and ensure adequate airflow, observe the following spatial requirements when deciding
where to install a rack:
• Leave a minimum clearance of 61.0 cm (24 in) in front of the rack.
• Leave a minimum clearance of 76.2 cm (30 in) in back of the rack.
• Leave a minimum clearance of 121.9 cm (48 in) from the back of the rack to the rear of another rack
or row of racks.
HP rack products draw cool air in through the front and expel warm air through the rear of the enclosure.
Therefore, the front of the rack enclosure must be adequately ventilated to enable ambient room air to enter
the enclosure, and the rear of the enclosure must be adequately ventilated to enable the warm air to escape
from the enclosure.
IMPORTANT: Do not block the ventilation openings.
If the front of the rack is not completely filled with components, the remaining gaps between the components
can cause changes in the airflow, which can adversely affect cooling within the rack. Cover these gaps with
blanking panels.
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.
Racks provide proper server cooling from flow-through perforations in the front and rear doors that provide
a 65% open area for ventilation.
Temperature requirements
To ensure continued safe and reliable equipment operation, install or position the rack in a well-ventilated,
climate-controlled environment.
The operating temperature inside the rack is always higher than the room temperature and is dependent on
the configuration of equipment in the rack. Check the TMRA for each piece of equipment before installation.
CAUTION: To reduce the risk of damage to the equipment when installing third-party options:
• Do not permit optional equipment to impede airflow around the node or to increase the
internal rack temperature beyond the maximum allowable limits.
• Do not exceed the manufacturer’s TMRA.
Power requirements
Installation of this equipment must comply with local and regional electrical regulations governing the
installation of IT equipment by licensed electricians. This equipment is designed to operate in installations