nerdexam
Microsoft

AZ-120 · Question #203

You are designing an SAP HANA deployment. You estimate that the database will be 1.8 TB in three years. You need to ensure that the deployment supports 60,000 IOPS. The solution must minimize costs…

The correct answer is D. Premium SSD. Premium SSD is the correct choice because it is SAP HANA-certified, delivers sub-millisecond latency, and can meet the 60,000 IOPS requirement - either via larger disk tiers or disk striping - at a significantly lower cost than Ultra disk. It strikes the optimal balance between…

Design and implement an infrastructure to support SAP workloads on Azure

Question

You are designing an SAP HANA deployment. You estimate that the database will be 1.8 TB in three years. You need to ensure that the deployment supports 60,000 IOPS. The solution must minimize costs and provide the lowest latency possible. Which type of disk should you use?

Options

  • AStandard HDD
  • BStandard SSD
  • CUltra disk
  • DPremium SSD

How the community answered

(22 responses)
  • A
    14% (3)
  • B
    5% (1)
  • C
    27% (6)
  • D
    55% (12)

Explanation

Premium SSD is the correct choice because it is SAP HANA-certified, delivers sub-millisecond latency, and can meet the 60,000 IOPS requirement - either via larger disk tiers or disk striping - at a significantly lower cost than Ultra disk. It strikes the optimal balance between performance and price for production SAP HANA workloads.

Why the distractors are wrong:

  • A (Standard HDD): Mechanical drives have the highest latency and lowest IOPS of any option - completely unsuitable for an in-memory database like SAP HANA.
  • B (Standard SSD): Offers better latency than HDD but still cannot reliably sustain 60,000 IOPS, and is not SAP HANA-certified for production use.
  • C (Ultra disk): Can exceed 60,000 IOPS and offers even lower latency, but is substantially more expensive. Since Premium SSD already satisfies both the IOPS and latency requirements, Ultra disk fails the "minimize costs" constraint.

Memory tip: Think of it as a Goldilocks problem - Standard HDD/SSD are too slow, Ultra disk is too expensive, but Premium SSD is just right for SAP HANA's certified, cost-efficient, low-latency sweet spot.

Topics

#Premium SSD#IOPS requirements#SAP HANA storage#disk cost optimization

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