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Difficulty: HardCompute Virtualization Solutions

A pharmaceutical company is planning to migrate a proprietary drug-discovery modeling application to Azure. The application has the following requirements:
- The virtual machines must run on hardware dedicated to a single customer at the physical host level to meet compliance standards.
- The workload requires a memory-to-vCPU ratio of at least 88 GiB of RAM per vCPU.
- The workload is steady-state, runs continuously, and cannot tolerate unexpected eviction or downtime.
- The storage layer requires a single disk that provides 10,00010,000 IOPS and 200200 MB/s throughput, with the capability to dynamically scale IOPS without resizing the disk.
- The architecture must guarantee a 99.99%99.99\% VM availability SLA.

Which of the following compute virtualization and storage solutions should you recommend to meet these requirements?

  1. Azure Dedicated Hosts deploying Esv5-series virtual machines distributed across multiple Availability Zones, using Premium SSD v2 storage.Answer
  2. B
    Azure Spot Virtual Machines of the Esv5-series distributed across multiple Availability Zones, using Premium SSD v2 storage.
  3. C
    Azure Dedicated Hosts deploying Esv5-series virtual machines distributed across multiple Availability Zones, using Standard SSD storage.
  4. D
    Azure Dedicated Hosts deploying Esv5-series virtual machines with Premium SSD v2 storage, with all hosts and virtual machines placed in a single Availability Zone.

Answer

Azure Dedicated Hosts deploying Esv5-series virtual machines distributed across multiple Availability Zones, using Premium SSD v2 storage.
The correct option satisfies all constraints: Azure Dedicated Hosts provide the required physical hardware isolation; the Esv5-series VM size provides the minimum 88 GiB of RAM per vCPU; Premium SSD v2 supports 10,00010,000 IOPS and allows independent performance scaling without disk resizing; and distributing VMs across multiple Availability Zones meets the 99.99%99.99\% availability SLA requirement.

Step-by-Step Solution

1
Analyze the tenant isolation and workload characteristics.
Single-tenant physical host isolation requires Azure Dedicated Hosts, which rules out public multi-tenant virtual machines and Spot VMs.
Regulatory compliance demands dedicated hardware, and the steady-state nature rules out Spot VMs due to eviction risk.
2
Determine the memory and virtual machine series requirements.
A memory-to-vCPU ratio of 88 GiB requires a memory-optimized VM family like the Esv5-series, which is supported on Azure Dedicated Hosts.
General-purpose (D-series) or compute-optimized (F-series) families do not meet the minimum 88 GiB per vCPU requirement.
3
Evaluate storage performance and scaling capabilities.
Premium SSD v2 is selected because it supports provisioning up to 80,00080,000 IOPS and allows independent tuning of IOPS and throughput without resizing the disk.
Standard SSDs do not scale to 10,00010,000 IOPS, and Standard/Premium SSD v1 requires expanding disk size to increase performance limits.
4
Validate the SLA and high availability design.
Distribute the Azure Dedicated Hosts and corresponding virtual machines across at least two Availability Zones.
A 99.99%99.99\% SLA for Azure VMs requires instances to be deployed across two or more Availability Zones in the same region.

Key Concept

Designing compute virtualization using Azure Dedicated Hosts, memory-optimized VM sizes, Premium SSD v2, and multi-zone high availability to meet SLA, compliance, and performance requirements.
Estimated Time:2m 30s
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Topics

Compute Virtualization Solutions

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