Sun Microsystems Cobalt LX50, Руководство пользователя

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Chapter 2: Installing the Server in a Rack
2-2 User Guide—Sun Cobalt LX50 Server
Precautions
Before beginning the rack installation process, read through the following precautions.
Anchor the Equipment Rack
The equipment rack must be anchored to an unmovable support to prevent it from falling over when one or more
servers are extended in front of it on slide assemblies. The equipment rack must be installed according to the
manufacturer's instructions. You must also consider the weight of any other device installed in the rack.
Main AC Power Disconnect
You are responsible for installing an AC power disconnect for the entire rack unit. This main disconnect must be
readily accessible, and it must be labeled as controlling power to the entire unit, not just to the server(s).
Grounding the Rack Installation
To avoid the potential for an electrical shock hazard, you must include a third wire safety grounding conductor with
the rack installation. If server power cords are plugged into AC outlets that are part of the rack, you must provide
proper grounding for the rack itself. If server power cords are plugged into wall AC outlets, the safety grounding
conductor in each power cord provides proper grounding only for the server. You must provide additional, proper
grounding for the rack and other devices installed in it.
Temperature
The ambient operating temperature of the server, when installed in an equipment rack, must not go below
5 ˚C (50 ˚F) or rise above 35 ˚C (95 ˚F). Extreme fluctuations in temperature can cause a variety of problems in your
server.
Ventilation
The equipment rack must provide sufficient airflow to the front of the server to maintain proper cooling. It must also
include ventilation sufficient to exhaust a maximum of 850 BTUs per hour for a fully loaded Sun Cobalt LX50 server.
It is important to note that this is the maximum, and a minimum or typical system could be much less. You may want
to calculate the BTU/hr more accurately for your configuration. An extra 500 BTUs per hour over many systems
would translate into a large error when calculating air-conditioning capacity.