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Exam AZ-301 topic 17 question 38 discussion

Actual exam question from Microsoft's AZ-301

Question #: 38
Topic #: 17

You have an Azure subscription.
Your on-premises network contains a file server named Server1. Server1 stores 5 TB of company files that are accessed rarely.
You plan to copy the files to Azure Storage.
You need to implement a storage solution for the files that meets the following requirements:
✑ The files must be available within 24 hours of being requested.
✑ Storage costs must be minimized.
Which two possible storage solutions achieve this goal? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.

A. Create a general-purpose v2 storage account that is set to the Cool access tier. Create a file share in the storage account and copy the files to the file share.
B. Create a general-purpose v2 storage account that is set to the Hot access tier. Create a blob container, copy the files to the blob container, and set each file to the Archive access tier.
C. Create a general-purpose v1 storage account. Create a file share in the storage account and copy the files to the file share.
D. Create an Azure Blob storage account that is set to the Cool access tier. Create a blob container, copy the files to the blob container, and set each file to the Archive access tier.
E. Create a general-purpose v1 storage account. Create a blob container and copy the files to the blob container.

Show Suggested Answer

Suggested Answer: AE 🗳️
A: Azure storage offers different access tiers, which allow you to store blob object data in the most cost-effective manner.
The Cool access tier is optimized for storing data that is infrequently accessed and stored for at least 30 days.
E: Using a file share is cheaper than using a blob container.
Incorrect Answers:
B, D: The Archive tier is optimized for storing data that is rarely accessed and stored for at least 180 days with flexible latency requirements (on the order of hours).
C: Using a Blob container would be cheaper than using a file share.
References:
https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-storage-tiers

by wblom at June 1, 2020, 7:29 p.m.

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rb09

Highly Voted 5 years ago

Ans should be B & D

upvoted 32 times

dev2dev

4 years, 11 months ago

the most expensive solution. wrong!

upvoted 5 times

juri

4 years, 11 months ago

wrong, Achive is the cheapest solution

upvoted 3 times

levianthan

4 years, 8 months ago

B reads hot...

upvoted 2 times

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dudus999

4 years, 10 months ago

B & D Standard priority: The rehydration request will be processed in the order it was received and may take up to 15 hours. High priority: The rehydration request will be prioritized over Standard requests and may finish in under 1 hour for objects under ten GB in size.

upvoted 10 times

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2cool2touch

Highly Voted 4 years, 12 months ago

B&D for sure. Question clearly asks for long term storage, retrieval in 24 hours and cheapest Other options wont satisfy. v1 cant be used so C&E options are gone. A is using Cool and File share which would be more expensive then Archive using Blob container Object storage data tiering between hot, cool, and archive is only supported in Blob storage and General Purpose v2 (GPv2) accounts. General Purpose v1 (GPv1) accounts don't support tiering. Blob storage and GPv2 accounts expose the Access Tier attribute at the account level. This attribute allows you to specify the default access tier for any blob that doesn't have it explicit set at the object level. For objects with the tier set at the object level, the account tier won't apply. The archive tier can be applied only at the object level. You can switch between these access tiers at any time.

upvoted 11 times

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siddjay

Most Recent 3 years, 4 months ago

Answers are not updated.. you need to have premium BLOB container to implement LifecycleManagement.

upvoted 1 times

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apsi

4 years, 8 months ago

I see answer explanation is contradictory: E: Using a file share is cheaper than using a blob container. C: Using a Blob container would be cheaper than using a file share.

upvoted 1 times

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dathwerth

4 years, 8 months ago

Not B, D: The Archive tier is optimized for storing data that is rarely accessed and stored for at least 180 days with flexible latency requirements (on the order of hours).?

upvoted 3 times

Jimmer

4 years, 8 months ago

The question literally states - "company files are are accessed rarely", and a requirement is to minimize storage costs. B & D make the most sense based on those two points. This article says files can take several hours to retrieve but smaller files take less than 1 hour - https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-storage-tiers?tabs=azure-portal. That meets the 24 hour threshold requirement as well.

upvoted 1 times

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Nehuuu

4 years, 9 months ago

B and D

upvoted 1 times

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rajs

4 years, 9 months ago

B and D have set each file to archive tier which is not possible. Access tiers are set at the storage account level. B has Hot access and D had cool access

upvoted 2 times

Gianlucag77

4 years, 9 months ago

5TB of how many files? If there were thousands files it would be impossible to set the tier for each one

upvoted 1 times

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Pan81

4 years, 9 months ago

Access tier can be set at Account Level as well as individual blob object level inside that account. By default all objects will inside the account will inherit the access tier set at Account Level if not explicitly set at object level. Also Account Level Access Tier and Access Tier for the object inside that account could be different.

upvoted 1 times

Pan81

4 years, 9 months ago

B & D here are the pricing details HOT Blob : $0.022 GB/month for First 50 TB COOL Blob : $0.01 GB/month for First 50 TB ARCHIVE Blob : $0.00099 GB/month for First 50 TB FILE : $0.06 GB/month Clearly Archive Access Tier has the least storage cost. and Archive Access Tier provides Standard rehydration in 15 Hours as well as Premium rehydration in 1 hours option (and since cost of access in not part of requirement)

upvoted 2 times

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[Removed]

4 years, 10 months ago

A. > Cool is cheaper then Hot, files are avail. for access within 24 hours. However archive tier would be even cheaper. B. > Provides lowest storage cost and rehydration pis within requirement (up to 15 hours). C. > Doesn't mention anything about the access tier. I'd rule it out. D. > Would provide the lowst storage cost and rehydration is within the requirement (up to 15 hours) E. > Doesn't mention anything about the access tier. I'd rule it out. Conclusion: > B & D

upvoted 8 times

[Removed]

4 years, 10 months ago

One thing to add. GPv1 accounts don't support tiering at all...

upvoted 2 times

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ablab

4 years, 10 months ago

A and E supports Cool Access Tier

upvoted 1 times

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gboyega

4 years, 10 months ago

B D are the correct answer

upvoted 4 times

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painkillers

4 years, 10 months ago

According to ot the link here: https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-storage-tiers?tabs=azure-portal#change-the-default-account-access-tier-of-a-gpv2-or-blob-storage-account general purpose v2 storage can have cool or hot tier setting. Object storage data tiering between hot, cool, and archive is only supported in Blob storage and General Purpose v2 (GPv2) accounts. General Purpose v1 (GPv1) accounts don't support tiering. https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-storage-tiers?tabs=azure-portal#storage-accounts-that-support-tiering

upvoted 1 times

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josemessias

4 years, 11 months ago

Answer: B,D - "Files are accessed rarely" - Archive access tier - "The files must be available within 24 hours of being requested" - Archive access tier with Standard priority: The rehydration request will be processed in the order it was received and may take up to 15 hours - "Storage costs must be minimized" - Archive access tier https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-rehydration?tabs=azure-portal

upvoted 7 times

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dev2dev

4 years, 11 months ago

RTO is 24 hours and archieve tier will give cost effective solution

upvoted 2 times

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quokka

4 years, 11 months ago

B & D for sure. Noticed it said "Storage costs must be minimized". It does NOT have requirement to retrieve or file sharing but "available within 24 hours". So that's how rare they will be accessed if at all. So there are enough hints to point to archive tier.

upvoted 4 times

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DeveshSolanki

4 years, 11 months ago

Agree Answer is B & D

upvoted 8 times

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Manmohan

4 years, 11 months ago

I will go with B & D

upvoted 4 times

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Myself101

4 years, 11 months ago

We need to use Blob Storage with Archive Access tier. When files are needed a retrieval time of up to 24 hours is allowed and retrieval happens rarely. So we need to use Blob Storage as only that even has the access tier. Furthermore tiering is only possible in Blob Storage Accounts or GPv2 accounts. So it must be B & D

upvoted 1 times

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