NEC Express5800 320La, User Manual

Page: 46 / 206

2-6 Setting Up the System
!
CAUTION
Temperature : The operating temperature of the server unit,
when installed in an equipment rack, must not go below 5 °C
(41 °F) or rise above 35 °C (95 °F). Extreme fluctuations in
temperature can cause a variety of problems in your server.
It is recommended that the ambient temperature for a rack-
mount unit not exceed 25°C.
Ventilation : The equipment rack must provide sufficient
airflow to the front of the server unit to maintain proper
cooling. It must also include ventilation sufficient to exhaust
a maximum of 3,000 Btu's per hour for the server. The rack
selected and the ventilation provided must be suitable to the
environment in which the server will be used.
Mounting the Rail Assemblies into the Rack Cabinet
Before you can mount the server unit in the rack cabinet, you must install the
rail assemblies in the rack cabinet.
Note:
You must use the following procedure to prepare
the rack cabinet before mounting the server unit into it.
Observe all safety precautions, warnings, and cautions
noted throughout this chapter.
Use the following procedure to install the rail assemblies into the rack cabinet.
1. Determine where you want to install the server unit in the rack cabinet.
!
To improve rack stability, mount the server unit towards the bottom of
the rack cabinet.
!
If there are units already installed, install the server unit into the next
empty space from the bottom of the rack cabinet.
2. Starting at the bottom of the rack cabinet, or at the top or bottom of a
previously mounted unit, measure the number of screw hole locations on the
front vertical mounting rails and rear vertical mounting rails (see Figure 2-2)
for the rail assemblies. Mark the location with a pencil on the outside of both
the front and rear vertical mounting rails.
Note:
For vertical reference, every three screw holes on
the rack vertical mounting rail are equal to 1U (1.75 inches).