AZ-305 practice question 3 of 35

Your company has 300 virtual machines hosted in a VMware environment. The virtual machines vary in size and have various utilization levels. You plan…

Choose your answer, then check it against the explanation and the full breakdown below.

Domain Design identity, governance, and monitoring solutions

Your company has 300 virtual machines hosted in a VMware environment. The virtual machines vary in size and have various utilization levels. You plan to move all the virtual machines to Azure. You need to recommend how many and what size Azure virtual machines will be required to move the current workloads to Azure. The solution must minimize administrative effort. What should you use to make the recommendation?

Answer options

Correct Answer:

Explanation

Azure Migrate is the purpose-built service for discovering, assessing, and migrating on-premises workloads to Azure. The "Azure Migrate: Discovery and assessment" tool specifically addresses the scenario by deploying an appliance in the VMware environment to discover VMs and collect performance data. Based on this data, it provides recommendations for the appropriate number and size (SKU) of Azure VMs required to support the workloads. This automated process of discovery and assessment directly fulfills the requirement while minimizing administrative effort, as it avoids manual inventory and performance analysis.

Why Incorrect

A. Azure Cost Management: This service is used to monitor, control, and optimize the costs of resources that are already running in Azure, not for pre-migration assessment of on-premises workloads.

B. Azure Pricing calculator: This is a tool for manually estimating costs. It requires you to already know the specific Azure VM sizes and quantities you plan to use; it does not assess your current environment to provide these recommendations.

D. Azure Advisor: This service provides recommendations to optimize existing Azure deployments for reliability, security, performance, and cost. It does not assess on-premises environments for migration planning.

References

1. Azure Migrate Documentation: "About Azure Migrate". Microsoft Learn. "Azure Migrate provides a centralized hub to assess and migrate on-premises servers

infrastructure

applications

and data to Azure. The hub provides Azure Migrate tools for assessment and migration

as well as third-party independent software vendor (ISV) offerings."

2. Azure Migrate Documentation: "Assessment overview for VMware VMs". Microsoft Learn. "An Azure VM assessment in the Azure Migrate: Discovery and assessment tool helps you to evaluate on-premises VMware VMs for migration to Azure... The assessment provides Azure sizing recommendations for on-premises VMs." This section explicitly details performance-based sizing which is key to the question.

3. Azure Advisor Documentation: "Introduction to Azure Advisor". Microsoft Learn. "Advisor is a personalized cloud consultant that helps you follow best practices to optimize your Azure deployments." This confirms its scope is limited to existing Azure resources.

4. Azure Cost Management Documentation: "What is Cost Management + Billing?". Microsoft Learn. This document outlines the capabilities for analyzing

managing

and optimizing Azure costs

which presumes the existence of Azure resources.

Question 3 of 35

Question breakdown

Tests: Design migration: assess on-premises workloads for Azure sizing
Difficulty: Easy

Key idea: Azure Migrate: Discovery and assessment uses an appliance to collect VMware VM performance data and produce performance-based Azure VM size and count recommendations.

How to reach the answer

The requirement is to determine how many and what size Azure VMs are needed for 300 existing VMware VMs.
The clue 'vary in size and have various utilization levels' points to performance-based sizing rather than simple one-to-one mapping.
'Minimize administrative effort' rules out manual inventory and per-VM sizing.
Only Azure Migrate discovers on-premises VMware VMs automatically and outputs sizing assessments.

Each option

AIncorrect. Cost Management analyzes spending on resources already running in Azure and does not assess on-premises VMs.
BIncorrect. The Pricing calculator needs you to already know the VM sizes and quantities, so all sizing would be manual.
CCorrect. Azure Migrate discovers the VMware VMs, collects utilization data, and recommends right-sized Azure VM SKUs automatically.
DIncorrect. Advisor gives recommendations only for resources already deployed in Azure, not for on-premises workloads.

Common trap: The Pricing calculator looks attractive because it deals with VM sizes and costs, but it cannot work out the sizes for you.

In practice: Before a datacenter exit, teams deploy the Azure Migrate appliance for a few weeks to collect performance history. They then use the assessment report to build the target VM list and cost estimate.

Remember: Use Azure Migrate whenever on-premises servers must be discovered and right-sized for Azure.

Official documentation: About Azure Migrate

Drafted with AI assistance and checked against the answer key.

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