Common Mistakes in Designing Data Stores for TSI Gen2 Solution
Question
You work for an automotive manufacturer that already has an Azure IoT solution in place.
The solution collects millions of data from thousands of field equipment like presses, welding robots, conveyors etc.
The quality department wants to add an improvement which provides them with near real-time hints on the trends that are taking shape, so that unfavorable events can be predicted.
You have just started designing the data stores for the new Time Series Insight (TSI) Gen2 solution.
Which two of the following statements are wrong?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D. E.Correct Answers: D, E
Note - The question is asking for TWO WRONG statements.
Option A is an incorrect choice because you can run queries on the warm store with no additional cost.
Option B is an incorrect choice because the minimum retention time of the warm store is 7 days which can be increased up to 30 days.
Option C is an incorrect choice because, unlike the warm store, when running queries against the cold store, additional costs can come up.
Option D is a CORRECT choice because queries against the warm storage are free.
Option E is a CORRECT choice because each Azure Time Series Insight event source must have its dedicated consumer group, not shared with any other consumers.
Otherwise, all readers are at the risk of failures.
Reference:
In the given scenario, the quality department of an automotive manufacturer wants to add a feature that will provide them with real-time hints on the trends that are taking shape so that they can predict unfavorable events. For this purpose, Time Series Insights (TSI) Gen2 solution is being used to design data stores.
Let's analyze each of the given options to find the correct answer:
A. Querying on the warm storage is free:
This statement is correct. TSI Gen2 solution offers a warm storage option for storing data, which is optimized for fast querying of recent data. Querying on warm storage is free and does not incur any extra cost.
B. The retention time in warm storage is 7-30 days:
This statement is incorrect. The retention time in warm storage is configurable and can be set from 1 day up to 400 days. The retention time depends on the selected pricing tier and the size of the warm store.
C. Querying on the cold storage incurs extra cost:
This statement is correct. TSI Gen2 solution offers a cold storage option for storing data, which is optimized for cost-efficient storage of historical data. Querying on cold storage incurs extra cost, and the cost depends on the amount of data queried and the selected pricing tier.
D. Querying on the warm storage incurs extra cost:
This statement is incorrect. Querying on the warm storage is free and does not incur any extra cost.
E. Multiple TSI event sources can use the same consumer group in IoT Hub:
This statement is correct. TSI Gen2 supports the use of the same consumer group for multiple event sources in IoT Hub. This allows multiple event sources to send data to the same TSI environment without creating multiple consumer groups.
Therefore, the correct answers are B and D. The retention time in warm storage is configurable and can be set from 1 day up to 400 days, and querying on the warm storage is free and does not incur any extra cost.
