Dc Systems; Dc System Redundancy - Intel NetStructure ZT 5085 12U Manual

Power Subsystem
Figure 22. ZT 5085 Power Distribution Overview (DC System)
4.1.1

DC Systems

There are twofour redundant DC power feeds:. A and B. Each DC power feed provides input to
two power supplies in each of the two power trays. Feed A provides power to the odd numbered
power supplies while Feed B provides power to the even numbered power supplies.
This configuration provides 2+2 redundant power to DC systemseach power domain.
4.2

DC System Redundancy

The system is designed to continue operation with any single fault. Examples of faults include:
•
Power feed failure
•
Power supply failure
If a single power feed fails, the system continues to receive power from the four power supplies
powered from the healthy feed. If a single power supply fails, the system continues to receive
adequate power from the healthy power supplies.
(DC)" on page 49
48
Fan Tray Fan Tray
Backplane
P P P P
S S S S
1 2 3 4
Power
Feed A
lists affects of various types of power faults with250 W power supplies.
Fan Tray
P P P P
S S S S
5 6 7 8
Power
Feed B
Table 5, "ZT 5085 Power Fault Tolerance Matrix
Technical Product Specification