Dual power installation

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9176 is designed with a fully redundant PDU power system. Each computer has 2 or 4 line cords attached to 2 or 4 power input ports which, in turn, powers a fully redundant power distribution system within the computer.

The system line cords should be connected to the installation site's distribution panels accordingly, in which system availability is optimized.

The minimum recommended redundant connection requires the line cords from odd numbered PDU's (such as PDU-A1 and PDU-A3), to be attached to a customer distribution power panel(s) that is independent of the customer distribution power panel(s) to which the line cords from even numbered PDU's (such as PDU-A2 and PDU-A4), are attached.

This method of connection can prevent a system outage from occurring, caused by the loss of a power distribution panel or the tripping of an upstream breaker that is powering that distribution panel. Additional redundancy, such as independent switchgear, feed transformers, or power substations, can further improve the system's resistance to power outages.

The following figures show the recommended PDU power connections for 9176.

Attention: Note that the line cords can exit the system from the top or bottom; top exit cabling is shown for illustrative purposes only.

This graphic shows the recommended PDU power connections for 3932, single A frame — Figure 1. A frame - PDU