For maximum redundancy in the power system for an S Series Node:
- The two power supplies in each enclosure should be plugged into two different PDUs.
- The two PDUs should be plugged into two different power sources.
This setup ensures that the entire power system has no single point of failure.
If only one power source is available, the two power supplies for an enclosure should be connected to separate circuits. If only one circuit is available, the two power supplies can be connected to the same PDU as a last resort, assuming the PDU has two available outlets and enough power capacity.
In any case, the power sources and PDUs used with an S Series Node must deliver the required amount of electricity:
- In the Americas geography: 208 volts
- In the EMEA/APAC geography, with single-phase PDUs: 230 volts
- In the EMEA/APAC geography, with three-phase PDUs: 400 volts
Each PDU must be powered from an appropriately rated circuit.
The power system input can be single-phase or three-phase.