Microsoft Azure Solutions Architect Expert AZ-305 Practice Question
Contoso stores approximately 3 PB of high-resolution images in Azure. New images are uploaded daily, but after the first 30 days fewer than 1 percent are ever read again. Compliance requires the data to stay in a single region; no cross-region replication is necessary. The solution must maximize durability while keeping overall storage cost as low as possible and still allow immediate reads when an occasional file is requested. Which Azure storage configuration should you recommend?
Create a General Purpose v2 storage account with locally redundant storage (LRS) and keep the blobs in the Hot access tier.
Provision a Premium block blob storage account with zone-redundant storage (ZRS) and keep the blobs in the Hot tier.
Create a General Purpose v2 storage account with locally redundant storage (LRS) and set the blobs to the Cool access tier.
Create a General Purpose v2 storage account with geo-redundant storage (GRS) and move the blobs to the Archive access tier.
The Cool access tier in a General Purpose v2 storage account is optimized for data that is infrequently accessed but must be available for immediate retrieval, with lower storage costs than the Hot tier and no rehydration delay like the Archive tier. Locally redundant storage (LRS) provides 11 nines (99.999999999 %) durability within a single region and is the least-expensive redundancy option. Therefore, choosing a GPv2 account with LRS and storing the blobs in the Cool tier best balances durability, performance, and cost. The Hot tier costs more to store data, Premium block blob targets low-latency workloads at higher prices, and using Archive plus GRS adds both retrieval delay and unnecessary replication expense.
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Microsoft Azure Solutions Architect Expert AZ-305
Design data storage solutions
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