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Exam AZ-305 topic 3 question 7 discussion

Actual exam question from Microsoft's AZ-305

Question #: 7
Topic #: 3

HOTSPOT -
You need to recommend an Azure Storage account configuration for two applications named Application1 and Application2. The configuration must meet the following requirements:
✑ Storage for Application1 must provide the highest possible transaction rates and the lowest possible latency.
✑ Storage for Application2 must provide the lowest possible storage costs per GB.
✑ Storage for both applications must be available in an event of datacenter failure.
✑ Storage for both applications must be optimized for uploads and downloads.
What should you recommend? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

Show Suggested Answer

Suggested Answer:

Box 1: BlobStorage with Premium Performance,ג€¦
Application1 requires high transaction rates and the lowest possible latency. We need to use Premium, not Standard.
Box 2: General purpose v2 with Standard Performance,..
General Purpose v2 provides access to the latest Azure storage features, including Cool and Archive storage, with pricing optimized for the lowest GB storage prices. These accounts provide access to Block Blobs, Page Blobs, Files, and Queues. Recommended for most scenarios using Azure Storage.
Reference:
https://docs.microsoft.com/en-us/azure/storage/common/storage-account-upgrade

by most_lenyora at Sept. 5, 2022, 9:11 a.m.

Comments

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Snownoodles

Highly Voted 2 years, 11 months ago

Application 2: Blobstorage with standard performance VS General purpose V2 with standard performance - General purpose V2 is always recommended since Blobstorage with a legacy so the given answer is correct

upvoted 38 times

vrm1358

3 months, 3 weeks ago

When comparing BlobStorage with standard performance and BlockBlobStorage with premium performance, the latter typically offers faster data access and lower latency. This is because premium performance storage accounts utilize solid-state drives (SSDs), providing low latency and high throughput. https://learn.microsoft.com/en-us/answers/questions/864000/difference-between-premium-vs-standard-general-pur?utm_source=chatgpt.com So between blob with standard and blockblobstorage with premium the latter is faster and meed datacenter failure. General Purpose v2 (GPv2) with standard performance, Cool access tier, and RA-GRS is generally the more cost-effective and flexible option. It provides enhanced features like blob-level tiering, comprehensive lifecycle management, and continuous read access to the secondary region, making it suitable for a wide range of applications and workloads.

upvoted 1 times

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Galron

2 years, 9 months ago

RA-GRS is more expensive than GRS.

upvoted 12 times

GarryK

2 years, 5 months ago

Yes, but legacy storage account are no longer recommended, so you cant recommend these solutions even if it may cost less. https://docs.microsoft.com/en-us/azure/storage/common/storage-account-overview#legacy-storage-account-types

upvoted 4 times

betterthanlife

2 years, 3 months ago

Blob Storage is still available and supported and less expensive per GB than GPv2 (according to the pricing calculator). "Legacy storage accounts are also supported. For more information, see Legacy storage account types." https://learn.microsoft.com/en-us/azure/storage/common/storage-account-overview https://learn.microsoft.com/en-us/azure/storage/common/storage-redundancy#supported-storage-account-types "The following table describes the legacy storage account types. These account types aren’t recommended by Microsoft, but may be used in certain scenarios:" (like because it's cheaper & offers GRS) https://learn.microsoft.com/en-us/azure/storage/common/storage-account-overview#legacy-storage-account-types

upvoted 2 times

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Galron

2 years, 9 months ago

But App2 must be accessible, so unless regional failover occurs, you'll need RA access?

upvoted 1 times

betterthanlife

2 years, 3 months ago

The blob option for App 2 also meets the following 2 requirements: - optimized for uploads and downloads (blob is over GPv2) - must be available in an event of datacenter failure (I'm going to assume "upload" would still be required in the event of failover, eliminating GPv2 with only RA-GRS)

upvoted 3 times

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jrv116psu

Highly Voted 2 years, 10 months ago

Pretty sure it's app 1 block blob (answer as listed) but for App 2 I think it's A : because #1 there is no hot and cool blobs in V1. and there's not option to pick GRS/RA-GRS etc. (go look at azure pricing calculator.) ... so by having cool and GRS it IS v2 storage. and therefore GRS is cheaper than RA-GRS.. so it's A ... Blob with GRS.

upvoted 23 times

Adx_YT

11 months ago

I think the key is ReadOnly GRS for V2

upvoted 1 times

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ShanYuen

Most Recent 1 month, 1 week ago

Application 2: Blobstorage Cool tier with GRS not General Purpose v2 because General Purpose v2 is refering to standard performance itself. While Blobstorage referring Azure Blob Storage, not Files, nor tables. That's why you can create tables and queues using General Purpose v2. So precisely, at Azure Portal you select for Azure Blob Storage, then select General Purpose v2.

upvoted 1 times

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[Removed]

8 months, 3 weeks ago

WRONG App1: BlockBlobStorage with Premium performance and zone redundant storage (ZRS) replicaton App2: BlobStorage with Standard Performance, cool access tier and GRS replication KEYWORD: <provide the lowest possible storage costs>

upvoted 4 times

davidpetersiani

8 months, 2 weeks ago

there is no BlobStorage with "Standard Performance"

upvoted 1 times

d7b83e2

7 months, 3 weeks ago

When I try to create a storage account, the options I have for "Primary service" are: - Azure Blob Storage or Azure Data Lake Storage Gen 2 - Azure Files - Other (tables and queues) If I pick "Azure Blob Storage or Azure Data Lake Storage Gen 2", the "Performance" options are: - Standard: Recommended for most scenarios (general-purpose v2 account) - Premium: Recommended for scenarios that require low latency. So it is confusing because there is an Azure Blob Storage Standard option but it can also be called general-purpose v2

upvoted 2 times

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Teerawee

10 months, 3 weeks ago

Premium block blob Zone-redundant storage (ZRS)

upvoted 1 times

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Teerawee

10 months, 3 weeks ago

1)BlockBlobStorage with Premium performance and Zone-redundant storage (ZRS) replication 2)BlobStorage with Standard performance, Cool access tier, and Geo-redundant storage (GRS) replication

upvoted 2 times

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KarimaMaf

11 months, 1 week ago

there is no storage account type called blobStorage (depricated), and Gpv1 also depricated. the given answer are correct depends on what left app1 blockblobstoarge=better performance+low latency+zrs(datacenter failure =we gonna have copy in each zone) app2 gpv2 less cost with cool tier (less cost)+ra-grs copy in another region the option for blockblob is expensive

upvoted 2 times

c_h_r_i_s_

9 months, 3 weeks ago

Yeah, you are correct. The question is asking for storage account types. Only two of the given options are even options, Premium block blob and Standard general-purpose v2.

upvoted 1 times

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23169fd

1 year, 1 month ago

Application 1: BlockBlobStorage with Premium performance and Zone-redundant storage (ZRS) replication Application 2: BlobStorage with Standard performance, Cool access tier, and Geo-redundant storage (GRS) replication

upvoted 1 times

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varinder82

1 year, 4 months ago

Final Answer: 1. BlockBlobStorage with Premium performance and ZRS replica 2. BlobStorage with Standard Performance, Cool access tier and GRS

upvoted 4 times

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ziggy1117

1 year, 7 months ago

App1: BlockBlobStorage with Premium performance and ZRS replica App2: BlobStorage with Standard Performance, Cool access tier and GRS - is the correct answer, GRS is cheaper then RA-GRS. I also checked the Azure Pricing Calculator and RA-GRS for GPurposeV2 is indeed more expensive

upvoted 4 times

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MichaelMelb

1 year, 10 months ago

App1: BlockBlobStorage with Premium performance and ZRS replica App2: BlobStorage with Standard Performance, Cool access tier and GRS - is the correct answer, GRS is cheaper then RA-GRS

upvoted 6 times

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Leocan

1 year, 10 months ago

The given answers are correct. - Storage for both applications must be available in an event of datacenter failure.

upvoted 1 times

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Vladobate

1 year, 11 months ago

Storage for Application2 must provide the lowest possible storage costs per GB - how we accomplish this with cool access tier?

upvoted 1 times

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firedog2023

2 years, 1 month ago

I think D is correct for App2. 'BlobStorage' doesnt exist as an option, its general purpose v2 as a BLOB. Also, RA-GRS does allow Write but only on failover. The purpose of RA is that you can also READ the secondary while the primary is still active. If there is a failover, it just becomes the writeable storage account as per normal GRS functionality. The READ is helpful if you are testing an app and you want to check it will connect to the secondary even though its in READ only mode. So think of its as everything GRS does but with a READ also for that specific scenario.

upvoted 3 times

sawanti

1 year, 11 months ago

RA-GRS is much more expensive than GRS as you also want to read that data. Storage should be as cheap as possible. BlobStorage is a legacy type, but Microsoft allows legacy datatypes for a scenarios where it can be more beneficial, hence A is correct.

upvoted 2 times

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sw1000

2 years, 2 months ago

App 1: BlockBlobStorage with Premium performance and zone redundant storage (ZRS) replicaton Storage for Application1 must provide the highest possible transaction rates and the lowest possible latency. - Yes Storage for both applications must be available in an event of datacenter failure. - Yes Storage for both applications must be optimized for uploads and downloads. - Yes App2: BlobStorage with Standard Performance, cool access tier and GRS replication Fullfills the requirements? Storage for Application2 must provide the lowest possible storage costs per GB. - Yes Storage for both applications must be available in an event of datacenter failure. - Yes Storage for both applications must be optimized for uploads and downloads. - Yes

upvoted 13 times

Vladobate

1 year, 11 months ago

Storage for Application2 must provide the lowest possible storage costs per GB - how we accomplish this with cool access tier?

upvoted 1 times

Elecktrus

1 year, 10 months ago

Cool storage is less expansive that premium. We are talking about storage cost, not access cost

upvoted 2 times

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Darkeh

1 year, 11 months ago

AGREED!

upvoted 1 times

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SD_Coordinator

2 years, 4 months ago

I recommend the following Azure Storage account configurations for Application1 and Application2: Application1: "BlockBlobStorage with Premium performance and Zone-redundant storage (ZRS) replication." This configuration offers the highest possible transaction rates and the lowest possible latency due to its Premium performance tier. ZRS replication ensures availability in the event of a datacenter failure. Application2: "General purpose v2 with Standard performance, Hot access tier, and Read-access geo-redundant storage replication." This configuration provides lower storage costs per GB due to its Standard performance tier and Hot access tier. Read-access geo-redundant storage replication ensures data availability in the event of a datacenter failure and allows for optimized uploads and downloads.

upvoted 2 times

SD_Coordinator

2 years, 4 months ago

I meant cool access tier. *

upvoted 2 times

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betterthanlife

2 years, 2 months ago

Not at all optimized for uploads if the target is read-only.

upvoted 1 times

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zellck

2 years, 5 months ago

1. BlockBlobStorage with Premium performance and ZRS replication 2. GPv2 with Standard performance, Cool access tier, and RA-GRS replication https://learn.microsoft.com/en-us/azure/storage/blobs/storage-blob-block-blob-premium Premium block blob storage accounts make data available via high-performance hardware. Data is stored on solid-state drives (SSDs) which are optimized for low latency. SSDs provide higher throughput compared to traditional hard drives. File transfer is much faster because data is stored on instantly accessible memory chips. All parts of a drive accessible at once. By contrast, the performance of a hard disk drive (HDD) depends on the proximity of data to the read/write heads.

upvoted 8 times

zellck

2 years, 5 months ago

https://learn.microsoft.com/en-us/azure/storage/common/storage-redundancy#supported-storage-account-types BlobStorage is legacy and not recommended.

upvoted 3 times

betterthanlife

2 years, 2 months ago

The question asks nothing about what MS recommends to make you do what they want you to do so they can consolidate control... Blob storage is still a service offering & is still supported. "The following table describes the legacy storage account types. These account types aren’t recommended by Microsoft, but may be used in certain scenarios:" (like because it's cheaper & offers GRS) https://learn.microsoft.com/en-us/azure/storage/common/storage-account-overview#legacy-storage-account-types

upvoted 1 times

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