AZ-104 Implement and Manage Storage Practice Question
An archive of legal documents is accessed only a few times each month, but when someone needs a document it must open immediately without a rehydration wait. Which access tier should be used?
⚠ Common exam trap
Candidates often confuse the 'Archive' tier name with the use case of 'archival data' and overlook the critical requirement for immediate access, mistakenly choosing Archive tier despite its mandatory rehydration delay.
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
✓
Cool tier
The Cool tier is designed for data that is infrequently accessed but must be available immediately when needed, with a lower storage cost than Hot tier but higher access costs. Since the archive is accessed only a few times per month and requires instant retrieval without rehydration delay, Cool tier meets both requirements, whereas Archive tier would impose a rehydration wait of up to 15 hours.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Hot tier
Why it's wrong here
Hot tier is optimized for workloads with high read and write rates, giving it the highest storage cost and the lowest per-access charges. For a legal document archive accessed only a few times each period, paying the premium storage price of Hot tier is wasteful because the savings on access fees never offset the higher monthly storage cost. Even though Hot tier also provides instant access, the expense profile does not match an infrequently accessed archive.
When this WOULD be correct
A scenario where data is accessed frequently (multiple times per day or week) and requires low latency, such as a production database or active user content, would make the Hot tier the correct choice.
- ✓
Cool tier
Why this is correct
Cool tier is the most cost-effective online tier for a legal archive that is read only a few times each period. It keeps blobs immediately accessible without any rehydration step while lowering storage costs compared to Hot tier, instead charging a higher per-access fee that is negligible for such low read frequency. Azure Cool tier has a 30-day minimum retention period, but that is acceptable for long-lived legal documents that are rarely touched.
- ✗
Archive tier
Why it's wrong here
Archive tier offers the lowest storage cost but takes blobs offline; before any read you must rehydrate the blob to a mutable online tier and wait, often for hours depending on the rehydration priority. A legal archive that is accessed occasionally still requires prompt retrieval when a document is requested, so the latency and additional management overhead make Archive unsuitable. Archive is intended for data where retrieval delays of up to 15 hours are acceptable, which does not fit this requirement.
When this WOULD be correct
A question where the requirement is to minimize storage costs for data that is rarely accessed and can tolerate a delay of several hours to retrieve, such as long-term backup archives or compliance records that are accessed only a few times per year.
- ✗
Geo-redundant storage (GRS)
Why it's wrong here
Geo-redundant storage is a data resiliency option that asynchronously replicates blobs to a secondary region to protect against regional outages; it is not an access tier based on how frequently data is used. Choosing GRS does not alter whether a blob is Hot, Cool, or Archive, and it adds replication charges instead of addressing the access-frequency problem. The issue here is read cost and availability, not durability redundancy, so GRS is not a relevant choice.
When this WOULD be correct
A question that asks: 'Which storage replication option provides the highest durability by replicating data to a paired region?' would make GRS the correct answer, as it ensures data survives a regional disaster.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓Cool tierCorrect answer▾
Why this is correct
Cool tier is the most cost-effective online tier for a legal archive that is read only a few times each period. It keeps blobs immediately accessible without any rehydration step while lowering storage costs compared to Hot tier, instead charging a higher per-access fee that is negligible for such low read frequency. Azure Cool tier has a 30-day minimum retention period, but that is acceptable for long-lived legal documents that are rarely touched.
✗Hot tierWrong answer — click to see why▾
Why this is wrong here
The Hot tier is designed for frequently accessed data with high availability, but the question specifies that the archive is accessed only a few times each month, making the Hot tier unnecessarily expensive compared to the Cool tier.
★ When this WOULD be the correct answer
A scenario where data is accessed frequently (multiple times per day or week) and requires low latency, such as a production database or active user content, would make the Hot tier the correct choice.
Why candidates choose this
Candidates may assume that 'immediate access' requires the Hot tier, overlooking that the Cool tier also provides instant access with lower storage costs for infrequently accessed data.
✗Archive tierWrong answer — click to see why▾
Why this is wrong here
The Archive tier has a rehydration time of up to 15 hours, which violates the requirement that documents must open immediately without a rehydration wait.
★ When this WOULD be the correct answer
A question where the requirement is to minimize storage costs for data that is rarely accessed and can tolerate a delay of several hours to retrieve, such as long-term backup archives or compliance records that are accessed only a few times per year.
Why candidates choose this
Candidates may think 'archive' is the cheapest tier and assume it fits the 'accessed only a few times each month' description, overlooking the critical need for immediate access without rehydration delay.
✗Geo-redundant storage (GRS)Wrong answer — click to see why▾
Why this is wrong here
Geo-redundant storage (GRS) is a replication strategy, not an access tier. The question asks for an access tier that provides immediate access without rehydration, which is not addressed by GRS.
★ When this WOULD be the correct answer
A question that asks: 'Which storage replication option provides the highest durability by replicating data to a paired region?' would make GRS the correct answer, as it ensures data survives a regional disaster.
Why candidates choose this
Candidates may confuse replication options with access tiers, thinking that GRS implies a higher availability tier, or they may mistakenly believe GRS provides faster access than other tiers.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
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 |
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Key term
Archive tier
Archive tier is an ultra-low-cost Azure Blob Storage access tier designed for long-term retention of data that is rarely accessed and can tolerate hours of retrieval latency.
Key term
Cool tier
Cool tier is a low-cost, online-only storage access tier in Microsoft Azure Blob Storage designed for data that is infrequently accessed and stored for at least 30 days.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-104 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-104 exam.