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WARNING: To reduce the risk of electric shock or damage to the equipment:
•
Never reach inside the chassis while the system is powered up.
•
Perform service on system components only as instructed in the user documentation.
CAUTION: Always be sure that equipment is properly grounded and that you follow proper
grounding procedures before beginning any installation procedure. Improper grounding can result in
ESD damage to electronic components. For more information, see Preventing electrostatic
discharge.
CAUTION: When performing non-hot-plug operations, you must power down the chassis and/or the
system. However, it may be necessary to leave the chassis 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 121.9 cm (48.0 in) in front of the rack and between rows of racks.
•
Leave a minimum clearance of 76.2 cm (30.0 in) in back of the rack for a single row of racks or after
the final row of racks.
Hewlett Packard Enterprise 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.
Planning the installation
7
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Troubleshooting
