The BEST way for a technician to configure a server rack for full power redundancy is:

Question

Options

• Aa single PDU attached to a single UPS
• Bmultiple PDUs each attached to a single UPS
• Cmultiple PDUs each attached to separate UPSs
• Dmultiple PDUs attached to a high availability UPS

• A
  11% (3)
• B
  7% (2)
• C
  4% (1)
• D
  79% (22)

Explanation

Full power redundancy requires eliminating single points of failure at every layer of the power chain. A PDU (Power Distribution Unit) distributes power from the UPS to individual servers. Using multiple PDUs ensures that if one PDU fails, the remaining PDUs can still deliver power. A High Availability (HA) UPS is purpose-built with internal redundant components (e.g., redundant rectifiers, inverters, and bypass circuits), ensuring the UPS itself has no single point of failure. The combination of multiple PDUs feeding from a centrally managed HA UPS delivers redundancy at every level: the UPS layer and the distribution layer. Option C (multiple PDUs on separate UPSs) introduces management complexity and potential for split-power issues. Options A and B still have single points of failure at the UPS level, making D the best full-redundancy solution.

No community discussion yet for this question.