When considering server consolidation, plan on running ___________ vCPUs per core.

Question

Options

• A1 to 2
• B3 to 4
• C4 to 6
• D6 to 8

• A
  86% (18)
• B
  10% (2)
• C
  5% (1)

Explanation

Option A (1 to 2 vCPUs per core) is correct because server consolidation planning uses a conservative ratio to ensure workloads receive adequate physical CPU resources without significant contention. The 1:1 or 2:1 vCPU-to-core ratio is the industry-standard baseline recommendation for capacity planning, balancing consolidation efficiency with predictable performance.

Options B, C, and D (3–4, 4–6, 6–8 vCPUs per core) represent increasingly aggressive oversubscription ratios that, while technically possible in some virtualization environments, introduce CPU contention risk and are not recommended as a planning baseline for server consolidation - they assume workloads are largely idle simultaneously, which is an unsafe assumption for sizing.

Memory tip: Think "conservative consolidation" - start with 1-to-2, because underestimating CPU demand is far less painful than over-committing it. If you see higher ratios on the exam, those belong to oversubscription tuning after consolidation, not the planning phase.

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