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Cisco MGX 8950 Hardware Installation Guide
Release 3, Part Number 78-14147-02 Rev. A0, November 2002
Chapter 1 Product Overview
System Hardware Components
Lower and Upper Fan Trays
Each fan tray houses nine fans that provide system cooling. The Cisco MGX 8950 switch requires that
two fan trays (upper and lower) be installed when the system is in operation.
Figure 1-1 shows the
location of the lower and upper fan trays in a Cisco MGX 8950 system.
Figure 1-36 shows the rear view of the fan tray. When a fan tray is installed, the air flow direction arrow
on the back of the lower fan tray should point up.
Figure 1-36 Fan Tray—Rear View
When the Cisco MGX 8950 switch is shipped installed in a Cisco-supplied cabinet, the fan trays are
installed in the cabinet as well.
Caution If a fan tray fails, replace it immediately.
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UP
AIR FLOW
DIRECTION