DU0-001 · Question #57
What is the most cost effective UPS configuration for a company that operates 8 hours a day, 5 days a week and requires redundancy?
The correct answer is C. Parallel redundant. Parallel redundant is the most cost-effective way to achieve redundancy because multiple UPS units share the load and automatically pick up for a failed unit, giving you N+1 protection without duplicating entire systems. Capacity (A) simply refers to sizing a UPS to handle the…
Question
Options
- ACapacity
- BSystem + system
- CParallel redundant
- DDistributed redundant
How the community answered
(46 responses)- A2% (1)
- B13% (6)
- C78% (36)
- D7% (3)
Explanation
Parallel redundant is the most cost-effective way to achieve redundancy because multiple UPS units share the load and automatically pick up for a failed unit, giving you N+1 protection without duplicating entire systems. Capacity (A) simply refers to sizing a UPS to handle the load and provides no redundancy on its own. System + system (B) delivers redundancy by running two fully independent UPS systems, but the full duplication of hardware makes it significantly more expensive than parallel redundant for most deployments. Distributed redundant (D) spreads UPS units across a facility, which is better suited to large or geographically spread-out environments and carries higher installation and maintenance costs than a centralized parallel configuration.
Memory tip: Think of parallel redundant as a team where everyone shares the work and one extra member is always on standby -- you get the safety net without paying for a full second team.
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