The answer is support for the SMB protocol, as Azure Files shares deliver fully managed SMB file shares in the cloud that are directly compatible with existing on-premises file servers, enabling a true lift-and-shift migration without requiring any application code changes. This compatibility is the core technical reason: because on-premises environments rely on SMB for file access, Azure Files provides a seamless transition where applications continue to use the same protocol, while Azure File Sync can cache hot data locally and tier cold data to the cloud, simplifying the hybrid migration path. On the AZ-305 exam, this question tests your understanding of storage migration patterns for the “Design a migration strategy” domain, and a common trap is choosing options like “built-in antivirus” or “automatic compression” instead of focusing on protocol compatibility and hybrid caching. Remember the mnemonic “SMB for SMB” — if you see SMB protocol support listed, it is almost always the correct benefit for a lift-and-shift file server scenario.
AZ-305 Design data storage solutions Practice Question
This AZ-305 practice question tests your understanding of design data storage solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are benefits of using Azure Files shares for lift-and-shift migrations of on-premises file servers?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Integration with Azure File Sync for hybrid scenarios
Azure Files shares provide fully managed SMB file shares in the cloud, which are directly compatible with on-premises file servers that use the SMB protocol. This makes them ideal for lift-and-shift migrations because applications can continue accessing files over SMB without code changes. Azure File Sync further extends this by enabling hybrid scenarios where on-premises servers can cache frequently accessed files while tiering to the cloud, simplifying the migration process.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Integration with Azure File Sync for hybrid scenarios
Why this is correct
Azure File Sync enables syncing with on-premises file servers.
Related concept
Read the scenario before looking for a memorised answer.
✗
Block-level deduplication
Why it's wrong here
Block-level deduplication is not natively supported in Azure Files.
✗
Support for iSCSI protocol
Why it's wrong here
Azure Files does not support iSCSI; it uses SMB and NFS.
✗
Automatic tiering of data to archive storage
Why it's wrong here
Tiering to archive is a feature of Blob Storage lifecycle management, not Azure Files.
✓
Support for SMB protocol
Why this is correct
Azure Files supports SMB 3.0 and later.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse Azure Files with Azure NetApp Files or on-premises file server features, assuming block-level deduplication or iSCSI support are available, when in fact Azure Files is a managed SMB/NFS service without those capabilities.
Detailed technical explanation
How to think about this question
Azure Files uses the SMB 3.0 protocol with encryption in transit, ensuring compatibility with Windows and Linux clients. Under the hood, Azure Files leverages Azure Storage accounts and supports features like Azure File Sync, which uses a cloud endpoint and a server endpoint to replicate changes via change journaling and sync sessions. In a real-world lift-and-shift scenario, an organization might migrate 10 TB of departmental shares to Azure Files, then use Azure File Sync to keep a local Windows Server as a cache for latency-sensitive applications, while the cloud serves as the authoritative copy.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-305 question in full detail.
Design data storage solutions — This question tests Design data storage solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Integration with Azure File Sync for hybrid scenarios — Azure Files shares provide fully managed SMB file shares in the cloud, which are directly compatible with on-premises file servers that use the SMB protocol. This makes them ideal for lift-and-shift migrations because applications can continue accessing files over SMB without code changes. Azure File Sync further extends this by enabling hybrid scenarios where on-premises servers can cache frequently accessed files while tiering to the cloud, simplifying the migration process.
What should I do if I get this AZ-305 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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