OCPRF100 MP Server System Technical Product Specification
Revision 1.0
2.3.1Hot-plug PCI Access Door
The hot-plug PCI access door is released by removing the two retaining screws (A in Figure 2-4:Hot-plug PCI Access Door) located on the top, middle area of the server. The cover slides toward the rear of the server and lifts straight up off of the server chassis, exposing the hot-plug PCI cards.
The hot-plug PCI access door is designed to maintain a flush surface with the top cover assem- bly, such that a vacuum-based hoist may be used during the assembly process.
A
B
Figure 2-4: Hot-plug PCI Access Door
2.4Fan Bay
The fan bay is a mechanical structure designed to contain six separate 120-mm cooling fans. These fans operate at a nominal voltage of 8.4 Vdc (2% tolerance) under normal conditions. Each fan produces a tachometer-based output to indicate the revolutions per minute (RPM) reading of the motor. Should a fan’s tachometer output drop below a predefined normal range of oper- ation, the FPC notifies the server management software that a fan has entered into the predictive fan failure condition. At this point, the fans will operate at an elevated voltage of approximately 12 Vdc.
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