What is the problem with oversizing the UPS system within a data center?

Question

Options

• AIt limits the growth capacity of the data center.
• BIt decreases the mean time to recover (MTTR).
• CIt increases the number of single points of failure.
• DIt drives excessive capital and maintenance expenses.

• A
  6% (2)
• B
  17% (6)
• C
  3% (1)
• D
  75% (27)

Explanation

Oversizing a UPS system means purchasing and installing far more backup power capacity than the data center actually requires. This creates a direct financial burden in two ways: the initial capital expenditure is inflated because you are buying equipment sized well beyond actual load needs, and ongoing maintenance costs (battery replacements, inspections, cooling requirements) scale with system size regardless of how much capacity is actually used. Option A is wrong because oversizing actually increases available growth headroom, not limits it. Option B is wrong because MTTR relates to recovery procedures and redundancy design, not system sizing, and oversizing does not inherently make recovery faster. Option C is wrong because single points of failure are a function of system topology and redundancy architecture, not whether the system is oversized. Memory tip: Think of oversizing like renting a warehouse when you only need a storage closet -- you pay full price for space you never use, and that overhead compounds every month.

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