CHAPTER 4
Cooling System Components and
Descriptions
•
M7i Cooling System Overview on page 15
M7i Cooling System Overview
The router cooling system consists of a fan tray, located along the left side of the chassis,
that provides side-to-side cooling (see Figure 9 on page 16). It connects directly to the
router midplane. The fan tray is a single unit containing four individually fault-tolerant
fans. If a single fan fails, the remaining fans continue to function indefinitely.
The fan tray is hot-removable and hot-insertable.
Figure 8: Fan Tray
M7i Airflow Through the Chassis
Figure 9 on page 16 shows airflow through the chassis and the location of the fan tray.
15Copyright © 2019, Juniper Networks, Inc.
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