Power Supply Concept | Power Supply Units |
12.2Power Supply Units
The power supply units (PSU) are directly accessible at the rear of the system (figure 69 on page 125):
The power supply unit can communicate with the system service processor via an internal management interface (IIC bus). The PSU part number, FRU data, barcode number, manufacturer ID, and fault data are stored in a VPD EEPROM module and can be recalled via the IIC bus. The PSU status can be displayed in the server management software ServerView.
Each power supply unit has a large fan on the front (A) and two smaller fans on the rear (B) that provide air cooling for the system (see figure 75 below).
BB
A
front | rear |
Figure 75: PSU: Fans
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