AZ-120 · Question #176
You migrate an on-premises instance of SAP NANA that runs SUSE Linux Enterpnse Server (SLES) to an Azure virtual machine. You project that in two years, you will replace the virtual machine with a…
The correct answer is A. a three-year reservation that has instance size flexibility D. Azure Hybrid Benefit. A three-year reservation with instance size flexibility (A) covers the full three-year window and allows you to swap to a larger VM within the same flexibility group when you upgrade in year two - no re-purchasing needed, and reservations don't affect availability SLAs. Azure…
Question
You migrate an on-premises instance of SAP NANA that runs SUSE Linux Enterpnse Server (SLES) to an Azure virtual machine. You project that in two years, you will replace the virtual machine with a larger virtual machine within the same flexibility group. You need to recommend solutions to minimize HANA deployment costs during the next three years. The solutions must not affect the availability SLAs. Which two solutions should you recommend? Each correct answer presents a complete solution NOTE: Each correct selection is worth one point.
Options
- Aa three-year reservation that has instance size flexibility
- Ba one-year reservation that has instance size flexibility
- Ca one-year reservation that has capacity priority
- DAzure Hybrid Benefit
- EAzure Spot instance
How the community answered
(38 responses)- A58% (22)
- B13% (5)
- C5% (2)
- E24% (9)
Explanation
A three-year reservation with instance size flexibility (A) covers the full three-year window and allows you to swap to a larger VM within the same flexibility group when you upgrade in year two - no re-purchasing needed, and reservations don't affect availability SLAs. Azure Hybrid Benefit (D) lets you apply existing on-premises SUSE Linux licenses (or Windows Server licenses) to Azure VMs, eliminating the OS licensing cost entirely, which is a major saving for HANA workloads.
Why the distractors fail:
- B (one-year reservation): Only covers one year; you'd pay on-demand rates for years two and three, missing significant savings.
- C (capacity priority): Capacity priority guarantees compute availability in constrained regions but offers no discount - it's for reliability, not cost reduction.
- E (Spot instances): Spot VMs can be evicted with 30-second notice, which directly violates availability SLAs for a production SAP HANA deployment.
Memory tip: Think "long lock-in + license reuse = maximum savings." The three-year reservation handles compute cost over the full horizon with flexibility to resize, while Hybrid Benefit handles the OS license cost - together they attack the two biggest cost levers without touching availability. If an answer introduces eviction risk or doesn't span the full period, eliminate it.
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