Installation guide

18 Brocade NetIron CES 2000 and NetIron CER 2000 Hardware Installation Guide
53-1001834-01
Hardware features
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Cooling system and fans
This section describes the fans in the NetIron CES 2000 and NetIron CER 2000 Series devices with
6 fans. Figure 21 shows the NetIron CES Series cooling fans.
FIGURE 21 Cooling Fans
The NetIron CES 2000 and NetIron CER 2000 Series device cooling fans use pull configuration to
move the air from the front to the back of the device.
The fans in the NetIron CES and NetIron CER 2000 Series devices include six four-speed fans that
operate at low speed, medium speed, medium-high speed, and high speed based on the ambient
temperature and configured or default temperature thresholds. All fans operate simultaneously at
the same speed. If a single fan fails within the assembly, the fan tray should be replaced. The fan
tray is hot swappable and the mean time to recover (MTTR) is one minute.
The system uses a default or configured temperature threshold associated with it to determine at
which speed the fan should operate. If desired, you can change the settings of the temperature
thresholds associated with fan speed devices.
1 Six cooling fans
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