User's Guide

36
Fan Unit
Fan units reduce the temperature inside the Blade Enclosure.
The enclosure can accommodate up to 10 fan units of the following model
 N8405-045 fan unit
Slots 2, 3, 4, 7, 8 and 9 have blank covers, while slots 1, 5, 6 and 10 do not.
For more information on the number of fan units necessary to cool a given number of CPU blades, see “Fan
unit slots” on page 26.
The illustration below shows the location of slots for adding fan units
The location of the fan units depends on the total number of fan units to be installed in the Blade Enclosure.
Install fan units in expansion slots labeled “O” in the illustration below, according to the total number of
fan units to be installed. Fit blank covers on any vacant expansion slots that do not contain fan units.
(The total number of fan units required depends on the number and type of modules installed.
For more information on the total number of fan units required, see “The number of CPU blades installed
and the number of power units required” on page 24.
IMPORTANT:
Use the blank covers supplied with the product.
When four fan units are required
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 7
Slot 9
Slot 10
Slot 8
Slot 6
Rear View
R
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