What are two advantages that the isolated redundant configuration has over a capacity configuration? (Choose two.)

Question

Options

• AThe isolated redundant configuration has a lower operating cost than a capacity design.
• BThe isolated redundant configuration provides redundancy but the capacity configuration does not.
• CThe isolated redundant configuration can scale to larger capacities than the capacity configuration.
• DThe isolated redundant configuration allows multiple vendor UPSs. The capacity configuration must use the same UPS manufacturers.

• A
  3% (1)
• B
  80% (32)
• C
  10% (4)
• D
  8% (3)

Explanation

Option B is correct because an isolated redundant configuration is specifically designed so that one set of components (such as power paths or UPS units) remains in standby, ready to take over if the active set fails - meaning true fault tolerance is built in. A capacity configuration, by contrast, uses all available paths simultaneously to maximize throughput, so there is no dedicated backup; a single failure reduces capacity rather than being absorbed by a standby system.

Option A is wrong because redundancy always adds cost - extra hardware, maintenance, and overhead mean isolated redundant configurations are more expensive to operate, not less. Option C is wrong because capacity configurations are designed precisely to maximize available capacity by using all resources at once, so they typically support higher throughput than a redundant design where some resources are held in reserve. Option D is wrong because vendor compatibility rules are not a defining characteristic that distinguishes these two configuration types; both can generally accommodate equipment from multiple manufacturers depending on the design.

Memory tip: Think of "isolated redundant" as keeping a spare tire in the trunk - you sacrifice some cargo space (capacity) to guarantee you can recover from a blowout (failure). The capacity configuration fills the trunk completely and has no spare.

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