Datasheet

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7
Thermal Management Solutions for Cisco
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Nexus 7000
and Catalyst 6500 Series Network Switches
For network equipment that utilize side-to-side airflow patter ns, such as the Cisco Nexus 7009, 7018, and Catalyst 6500 Series Switches,
rack mounted exhaust ducts can be used to optimize cooling ef ficiency by establishing a front to back airflow patter n.
4 post rack configured without
thermal exhaust duct
4 post rack configured with a
thermal exhaust duct illustrating
a front to back airflow pattern
Controlling Exhaust Air via Ducting
• A thermal exhaust duct pr events
preheated air exhausted from a
side-to-side airflow switch from
entering the adjacent switch inlet
Shown below is a front access cross sectional view of a multi-rack lineup, demonstrating thermal exhaust temperatur es both with
and without thermal exhaust ducts.
By redirecting the exhaust, the
following benefits are achieved
• Lower inlet temperatures
• Variable speed fans run at
slower speeds
• Decreased thermal stress on
system, improving reliability
• Decreased energy usage
15
20
25
30
35
40
45
50
55
60
Temperature (°C)
15
20
25
30
35
40
45
50
55
60
Temperature (°C)
No Thermal Exhaust Duct
Thermal Exhaust Duct on Each Switch
Panduit 4 post rack thermal ducts shown
in a dual Nexus 7009 switch deployment.
SA-RKCB15 (Space Saving CableMgmt Brochure).qxp 2/6/2012 10:20 AM Page 7