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Exam AZ-304 topic 3 question 38 discussion

Actual exam question from Microsoft's AZ-304

Question #: 38
Topic #: 3

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

Show Suggested Answer

Suggested Answer: BE 🗳️

by pentium75 at Aug. 31, 2021, 2:17 p.m.

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pentium75

Highly Voted 3 years, 9 months ago

Answer should be B and E (Archive Tier). Though under "incorrect answers", the explanation states: "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)." And that is exactly what is asked here. The files "are accessed rarely." They must be "available within 24 hours of being requested." And "Storage costs must be minimized."

upvoted 35 times

GetulioJr

3 years, 8 months ago

E is not correct. ". Create a blob container, copy the files to the blob container, and set each file to the Archive access tier." You will never set each file to be archive. you would set the container.

upvoted 1 times

Bob888

3 years, 8 months ago

We can set at the object level according to following URL , that means we can set at each file level. https://docs.microsoft.com/en-us/azure/storage/blobs/manage-access-tier?tabs=portal

upvoted 6 times

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subbu3071988

3 years, 8 months ago

How can Option B minimize storage cost? Can you please help us enlighten? It has storage costs for Hot default access tier at the account level+ the copy of files in the Archive access tier! It cannot have optimized storage costs better than Options D&E.

upvoted 3 times

tteesstt

3 years, 8 months ago

Access tier on file overrides default account access tier.

upvoted 9 times

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subbu3071988

Highly Voted 3 years, 8 months ago

A. General-purpose v1 accounts do not provide access to Cool or Archive storage and has high storage prices. So this option is ruled out. B. Owing to default Hot Access Tier at account level, all savings derived out of Archive storage tier will be nullified. C. GPv1 option is ruled out. D. Yes. One of the cheaper storage cost options E. Yes. Cheapest amongst all options.

upvoted 9 times

yyuryyucicuryyforme

3 years, 5 months ago

It's certainly B) and E) as the cost for Archive access tier storage by size is vastly cheaper than Cool or Hot. If Read costs are to be neglected ("rarely"), and Write costs are more or less equal (a separate discussion, but as they are), then the storage volumetric cost is the overriding cost and a very rough rule of thumb is something like, if Hot=$100, then Cool=$75 and Archive=$5 (billed on the daily average qty). (The write cost of Hot is half of Cool and Archive ; writes are zero cost per GB but cost per operation; in the worst case 2x operations to write hot then change to Archive depending on blob size).

upvoted 2 times

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AberdeenAngus

Most Recent 3 years ago

The problem with E "Azure Blob storage account" is that it must be premium, and premium doesn't support archive tiers. So I think only B is correct! https://docs.microsoft.com/en-us/azure/storage/blobs/storage-feature-support-in-storage-accounts

upvoted 1 times

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sapien45

3 years ago

. Blobs in the account inherit this access tier unless you explicitly override the setting for an individual blob.

upvoted 1 times

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Preeto18

3 years, 3 months ago

B and E is the 100% Correct Answer !!!!!!! 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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plmmsg

3 years, 3 months ago

Selected Answer: BE

B and E - Archive Tier. Min storage cost

upvoted 2 times

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Ann_Abdelrahman

3 years, 3 months ago

I agree with C and D

upvoted 1 times

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jr_luciano

3 years, 4 months ago

Selected Answer: BE

Answer should be B and E

upvoted 1 times

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Suhasrs

3 years, 5 months ago

Selected Answer: DE

It cannot be general-purpose v1, as it does not support access tiers. It cannot be file share as archive tier will be lower cost compared to file share. Then I would choose Cool as default to minimize cost, hence my options of D and E.

upvoted 1 times

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massnonn

3 years, 5 months ago

Selected Answer: BE

the correct answer

upvoted 1 times

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Eitant

3 years, 6 months ago

Selected Answer: BE

Correct answer

upvoted 5 times

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[Removed]

3 years, 6 months ago

Selected Answer: DE

Cool and Archiv tier are right answers. Others can be omitted

upvoted 1 times

[Removed]

3 years, 5 months ago

B & E is correct.

upvoted 1 times

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DerekKey

3 years, 7 months ago

Everything that includes Archived should be ruled-out. - The files must be available within 24 hours of being requested. -> although the time required to get files is up to 15h - Storage costs must be minimized -> you will pay for the remaining time (180 - days the file was stored)

upvoted 1 times

china5000

3 years, 5 months ago

Agree if thee is no "The files must be available within 24 hours of being requested"; as you know, this only applies to archived. Containers and File Shares have immediate access.

upvoted 1 times

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JayBee65

2 years, 12 months ago

Why? "While a blob is in the Archive tier, it can't be read or modified. To read or download a blob in the Archive tier, you must first rehydrate it to an online tier, either Hot or Cool. Data in the Archive tier can take up to 15 hours to rehydrate, depending on the priority you specify for the rehydration operation" from https://docs.microsoft.com/en-us/azure/storage/blobs/access-tiers-overview, which means it will meet the 24 hour requirment

upvoted 1 times

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dirgiklis

3 years, 7 months ago

Outdated question. Only available options are B and D the rest is legacy.

upvoted 3 times

TariqKipkemei

3 years, 5 months ago

yes only B and D are the available options from azure portal as at today 19/Jan/2022.

upvoted 1 times

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JayBee65

2 years, 12 months ago

I'm not sure what you are referring to

upvoted 1 times

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student22

3 years, 7 months ago

B,E ---

upvoted 1 times

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tteesstt

3 years, 8 months ago

B & E.

upvoted 1 times

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syu31svc

3 years, 8 months ago

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. I would take B and E

upvoted 3 times

justfordevelopment

3 years, 2 months ago

great explanation.

upvoted 1 times

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