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Rack Power
Each fully configured rack in an LC Series cluster reference design comes with three 24-Amp
(Americas region) or 32-Amp (European regions) High Voltage Power Distribution Units
(PDUs). The data center will need to be configured to support this amount of power and
power cabling. Power units supplied for other regions or to unique customer specifications
may come with alternative PDUs. This should be reviewed prior to receiving the cluster to be
sure that the data center is properly equipped.
Rack Cooling
The racks in each HPC LC Series solution draw cool air in through the front and exhaust
warm air out of the rear. To ensure continued safe and reliable operation of the equipment,
place the system in a well-ventilated, climate-controlled environment. A minimum of
50 inches (127 cm) is needed in front of the rack for adequate cooling and servicing. A
minimum of 30 inches (76.2 cm) is required behind the rack for adequate cooling and
servicing, but 50 inches (127 cm) are recommended. The HPC LC Series solutions should be
placed in data centers with an adequate air-conditioning system to handle continuous
operation of this solution. The maximum allowable ambient operating temperature for the LC
Series Clusters is 35°C (95°F).
Please review the documentation for each of the components within your HPC LC Series
solution to learn more about the recommended ambient temperatures. Component placement
in the rack is very important to ensure proper cooling. Larger cluster interconnect switches,
for example, must be located at the bottom of the rack to allow for additional cool air. It is
also very important to keep components installed in the servers as recommended, such as
hard disk drives, CD-ROM drives, or their blanks, to ensure proper airflow through the
server.
Step 4: Connecting External and Inter-rack Cables
All of the network cables within each rack are labeled for easy identification. The HPC LC
Series cabling guides explain and illustrate the cabling connections for each of the HPC LC
Series solutions in detail.
All cables whose two endpoints reside in a single rack will already be connected when
delivered to the customer's site.
If your HPC solution is comprised of multiple racks, then there will be some inter-rack
cabling. That is, some of the cables from one rack will need to be connected to components in
another rack. Following the cabling guide and using the cable labels, connect these cables.
One end of these cables will be connected to a component in a rack. The other end will be
coiled and secured in the rack for shipping purposes. You will need to unpack the free cable
end and then connect it to its destination in the other rack. The cable lengths provided with
the solution are planned to make the connections as follows:
HP High Performance Clusters LC Series Setup and Installation Guide
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