Exam AZ-305 topic 3 question 7 discussion

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

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.

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>

Premium block blob Zone-redundant storage (ZRS)

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

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

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

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

I used Azure Pricing calculator to have a look for box2. Block Blob Storage, Blob Storage, Flat Namespace, GRS Redundancy, Cool Access Tier, 1,000 GB Capacity - Pay as you go Monthly: $66.50 Block Blob Storage, General Purpose V2, Flat Namespace, RA-GRS Redundancy, Cool Access Tier, 1,000 GB Capacity - Pay as you go Monthly: $75.60 There is not a huge difference but definitely BlobStorage is cheaper for Application2. Not sure what to make of it, but since it is still supported I would go with this option to save a few bucks.

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

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

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

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

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.

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

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.

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.