A customer is interested in IBM LinuxONE as a platform for their new cloud-based application infrastructure. A sizing exercise has shown that one LinuxONE Emperor II machine (in LM2 configuration)…

Question

Options

• ARAIM memory, Capacity on Demand, SIMD
• BProcessor sparing, I/O redundancy, RAIM memory
• CProcessor sparing, SIMD, CPACF
• DCPACF, I/O redundancy, Capacity on Demand

• A
  6% (3)
• B
  8% (4)
• C
  15% (7)
• D
  71% (34)

Explanation

Option D is correct because it addresses the three key dimensions of concern for a single-frame cloud deployment: CPACF provides hardware-accelerated cryptography essential for securing cloud workloads without external crypto hardware; I/O redundancy ensures multiple redundant data paths within the frame, directly countering the "single point of failure" worry; and Capacity on Demand allows activating additional processors and memory on-the-fly as workload grows, so the customer isn't locked into the current sizing.

Why the distractors fail:

• A includes SIMD, which is a performance feature (vector/parallel processing for analytics), not a resilience or availability feature - it doesn't address single-frame risk.
• B is the most tempting distractor, but Processor sparing and RAIM (Redundant Array of Independent Memory) are hardware-internal fault-tolerance mechanisms, not features a specialist would highlight to address scalability and cloud-security concerns - the set lacks both CoD and CPACF.
• C pairs SIMD (wrong category - performance, not availability) with CPACF and Processor sparing, giving an incomplete and mismatched set that ignores I/O redundancy and scalability.

Memory tip: Think of the three customer worries for a single frame - "Will it be secure? Reliable? Scalable?" - and map them to D's trio: CPACF (security), I/O redundancy (reliability), Capacity on Demand (scalability). The two "C"s in option D both start with "C" for Cloud concerns.

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