AZ-305 Design data storage solutions Practice Question
A company wants to automatically tier data between hot, cool, and archive access tiers based on last access time to optimize costs. Which Azure feature should they implement?
⚠ Common exam trap
Candidates often confuse Azure File Sync's 'cloud tiering' feature with blob lifecycle management, but File Sync only tiers between local server and Azure Files (not between hot/cool/archive tiers) and does not use last access time for tiering decisions.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Blob Storage lifecycle management
Azure Blob Storage lifecycle management allows you to define policies that automatically move blobs between hot, cool, and archive access tiers based on conditions such as last access time or age. This directly addresses the requirement to optimize costs by tiering data according to access patterns without manual intervention.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Azure Blob Storage lifecycle management
Why this is correct
Azure Blob Storage lifecycle management is the correct service because it natively applies predefined rules to automatically move blobs between the hot, cool, and archive access tiers based on conditions such as age or last modified time. These lifecycle policies are evaluated daily and can also delete blobs, ensuring storage costs stay optimized without manual intervention. The rules operate at the storage account or container level, giving granular control over both current tier placement and future transitions.
- ✗
Azure Data Box
Why it's wrong here
Azure Data Box is an offline data transfer service that ships a physical storage device to ingest large volumes of data when network upload is impractical or too slow. It is a one-time migration tool, not a continuous management service, so it cannot apply ongoing rules to move data between hot and cool tiers. Once the data is uploaded to Azure, lifecycle management would still be required to perform any subsequent automatic tiering.
- ✗
Azure Backup
Why it's wrong here
Azure Backup is designed for data protection by creating recovery points for Azure VMs, SQL databases, and other workloads, enabling restore in case of corruption or disaster. It does not participate in day-to-day storage tiering between hot and cool tiers; backup data resides in Recovery Services vaults with its own lifecycle, separate from the source blob storage. Choosing it would meet backup requirements but would leave the automatic hot/cool data movement completely unaddressed.
- ✗
Azure File Sync
Why it's wrong here
Azure File Sync provides continuous sync between on-premises file servers and Azure file shares, and its cloud tiering feature only applies to SMB file share data to reduce local storage footprint. It is not a general-purpose blob tiering solution and cannot manage the hot/cool access tiers of Azure Blob Storage. This makes it inappropriate for a scenario that requires automatic tiering of arbitrary blob objects, which is the specific job of Blob Storage lifecycle management.
Quick reference
Azure Blob Storage Tier Comparison
| Tier | Storage Cost | Retrieval Cost | Latency | Use Case |
|---|---|---|---|---|
| Hot | Highest | Lowest | Immediate | Active data, frequent reads |
| Cool | Lower | Higher | Immediate | Data accessed < once / month |
| Cold | Lower still | Higher | Immediate | Data accessed < once / quarter |
| Archive | Lowest | Highest + rehydration delay | Hours | Long-term compliance retention |
Go deeper
Related to this question
About these practice questions
This AZ-305 question is part of Courseiva's 795-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-305 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-305 exam.