Cooling Zones And Power Classes - IBM Nways 8260 Manual

Figure 63. 8260 Cooling Zones and Power Classes
The above process is shown in Figure 64 on page 95.
94
8260 Multiprotocol Intelligent Switching Hub
power class and slot position within the affected cooling zone as shown if
Figure 63 on page 94.
Modules are powered down until the 5 volt power supply consumption is
reduced by 50 watts.
The temperature is allowed to stabilize for 15 minutes and if the temperature
is still too high, all the 8260 modules in the affected zone are powered down.
When the overheat condition is resolved the modules are powered back up.
Modules with the highest priority are powered up first.
The 8250 modules and the 8260 modules with power class 10 cannot be
powered down by the Controller module.
If the Overheat_Auto_Power_Down is disabled, the Controller module will not
take any action. If the over temperature condition continues, the 8260 may
be damaged.