Azure Blob Storage SLA for Data Recovery

Minimum SLA for Data Recovery

Question

You are building a website that uses Azure Blob storage for data storage.

You configure Azure Blob storage lifecycle to move all blobs to the archive tier after 30 days.

Customers have requested a service-level agreement (SLA) for viewing data older than 30 days.

You need to document the minimum SLA for data recovery.

Which SLA should you use?

Answers

Explanations

Click on the arrows to vote for the correct answer

A. B. C. D.

B.

The archive access tier has the lowest storage cost.

But it has higher data retrieval costs compared to the hot and cool tiers.

Data in the archive tier can take several hours to retrieve depending on the priority of the rehydration.

For small objects, a high priority rehydrate may retrieve the object from archive in under 1 hour.

https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-storage-tiers?tabs=azure-portal

When you configure Azure Blob storage lifecycle to move all blobs to the archive tier after 30 days, it means that blobs that are not modified or accessed during this period are moved to a lower-cost storage tier known as the archive tier. The archive tier has a higher retrieval time compared to the hot and cool tiers, which means that data retrieval might take longer.

Customers have requested a service-level agreement (SLA) for viewing data older than 30 days. This means that the customers require a minimum guarantee on how long it will take to retrieve their data from the archive tier.

The answer to the question, therefore, is the SLA that guarantees the minimum time it will take to retrieve data from the archive tier. From the given options, the SLA that guarantees the minimum data recovery time is D. between zero and 60 minutes.

This means that once a request is made to retrieve data from the archive tier, it will take between zero and 60 minutes to retrieve the data and make it available for viewing by the customer. This SLA guarantees a fast retrieval time and ensures that customers can access their data promptly.

It's important to note that the SLA is only a minimum guarantee, and the actual retrieval time might vary depending on several factors, such as network latency, the size of the data, and the number of requests being made simultaneously.